Template:Yes

From IMWiki
Jump to: navigation, search

Basic general information about the protocols: creator, version, amongst others.

Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej (simple)

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej, but via a memo system that differs from the main system

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No 3 Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Medium Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej (everyone, multiple simultaneous, any size)

Meca Network Meca Communications Nov 2002 Proprietary Username Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej (Aim Pro, Aim Lite)

Template:No Template:No Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej?

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej (Multiple, simultaneous)

PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej (multiple simultaneous, any size, programmable)

Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
Gadu-Gadu Gadu-Gadu 17 July 2000 Proprietary Unique number
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes (simple) Template loop detected: Template:Yes
IRC Jarkko Oikarinen August 1988 Open standard Nickname!Username@hostname
(or "hostmask")
e.g. user!~usr@a.b.com 1
Template loop detected: Template:Yes, but via a memo system that

differs from the main system

Template loop detected: Template:Yes Template:No 3 Template:No Template loop detected: Template:Yes Medium Template loop detected: Template:Yes (everyone, multiple simultaneous, any size)
Meca Network Meca Communications Nov 2002 Proprietary Username Template loop detected: Template:Yes Template:No  ?
MSNP (Windows Live Messenger, etc) Microsoft July 1999 Proprietary E-mail address (Windows Live ID) Template loop detected: Template:Yes Template:No Only for certified robots Template:No Template:No Template:None  ?
OSCAR protocol (AIM, ICQ) AOL 1997 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template loop detected: Template:Yes (Aim Pro, Aim Lite) Template:No Template:No Template:No Template loop detected: Template:Yes? Template loop detected: Template:Yes (Multiple, simultaneous)
PSYC (Protocol for SYnchronous Conferencing) PSYC Project 1995 Open PSYC URI as in psyc://server.example.net/~nickname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes (multiple simultaneous, any size, programmable)
Retroshare Retroshare 21 March 2007 Open Unique RSA-Key Template:No Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Template:No Template:No Template:No
TOC protocol (deprecated) AOL  ? Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No paying members only
TOC2 protocol AOL Sep 2005 Proprietary Username or UIN
e.g. 12345678
Template loop detected: Template:Yes Template:No Template:No Template:No Template:No Template:No paying members only
XMPP (Jabber) Jeremie Miller, standardized via IETF January 1999 Open standard Jabber ID (JID)
e.g. usr@a.b.c/home 2
Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Several Standardized Types Optional
SIP/SIMPLE IETF Dec 2002 Open standard user@hostname Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template loop detected: Template:Yes Template:No Medium  ?
YMSG (Yahoo! Messenger) Yahoo!  ? Proprietary Username Template loop detected: Template:Yes Template:No Template:No Template loop detected: Template:Yes Template:No Template loop detected: Template:Yes Template:No (groups discontinued due to liability)
DirectNet Gregor Richards January 2006 Open standard Username  ?
Zephyr Notification Service Open standard  ?
Gale Dan Egnor Open standard Unique RSA key, aliased to user@domain Template loop detected: Template:Yes (public/private key) Template loop detected: Template:Yes (multiple simultaneous, any size, programmable, encrypted)
Skype Protocol Skype Proprietary Username Template:No Proprietary Template:No Unknown Template loop detected: Template:Yes

Note 1: In ~usr@a.b.com, the a.b.com part is known as the "hostmask" and can either be the server being connected from or a "cloak" granted by the server administrator; a more realistic example is ~myname@myisp.example.com. The tilde generally indicates that the username provided by the IRC client on signon was not verified with the ident service.

Note 2: In usr@a.b.c/home, the home part is a "resource", which distinguishes the same user when logged in from multiple locations, possibly simultaneously; a more realistic example is user@jabberserver.example.com/home

Note 3: Scalability issue: The protocol gets increasingly inefficient with the amount of contacts.<ref>RFC 1324, D. Reed, 1992. 2.5.1, Size</ref><ref>Functionality provided by systems for synchronous conferencing, C.v. Loesch, 1992. 1.2.1 Growth</ref>

Note 4: One-to-many/many-to-many communications primarily comprise presence and groupchat distribution. Some technologies have the ability to distribute data by multicast, avoiding bottlenecks on the sending side caused by the amount of recipients. Efficient distribution of presence is currently however a technological scalability issue for both XMPP (Jabber) and SIP/SIMPLE.

References

Template:Reflist

Template:IM clientsde:Liste von Instant-Messaging-Protokollen pl:Porównanie protokołów komunikacji natychmiastowej

Template:No Template:No Basic general information about the protocols: creator, version, amongst others.
Creator First public release date License Identity (not inc. alias) Asynchronous message relaying Transport Layer Security Unlimited number of contacts Bulletins to all contacts One-to-many routing 4 SPAM protection Supports groups or channels for members / nonmembers / nobody
Cspace Cspace 17 July 2006 Open Unique RSA-Key