It has been suggested that Comparison of instant messaging protocols be merged into this article or section. (Discuss)

The following is a list of instant messaging protocols. Image File history File links Please see the file description page for further information. ... The following tables compare general and technical information for a number of instant messaging protocols. ... A screenshot of PowWow, one of the first instant messengers with a graphical user interface Instant messaging is the act of instantly communicating between two or more people over a network such as the Internet. ... In the field of telecommunications, a communications protocol is the set of standard rules for data representation, signalling, authentication, and error detection required to send information over a communications channel. ...

Open

• DirectNet
• Internet Relay Chat (IRC)
• Jabber
• Lotus Sametime
• MUNDU Messenger
• PSYC
• Session Initiation Protocol
• SIMPLE
• Voice over IP (many protocols)
• Wireless Village
• Zephyr Notification Service

DirectNet is a peer to peer instant messaging protocol and client software for multiple platforms, such as Windows and GNU/Linux, developed by Gregor Richards. ... Internet Relay Chat (IRC) is a form of instant communication over the Internet. ... This article is about a communications protocol. ... IBM Lotus Sametime is the commercial Instant Messaging service by the Lotus Software brand of IBM. It provides instant messaging(IM) and presence awareness capabilities as well as support for web conferencing. ... PSYC (Protocol for SYnchronous Conferencing) is a flexible text-based protocol for delivery of data to a flexible amount of recipients or people, by unicast or multicast. ... Session Initiation Protocol (SIP) is a protocol developed by the IETF MMUSIC Working Group and proposed standard for initiating, modifying, and terminating an interactive user session that involves multimedia elements such as video, voice, instant messaging, online games, and virtual reality. ... Look up Simple on Wiktionary, the free dictionary In music a simple interval is one which lies within one octave, contrasted with a compound interval which exceeds or is wider than one octave. ... A typical VoIP Solution A typical analog telephone adapter for connecting an ordinary phone to a VoIP network Voice over Internet Protocol (also called VoIP, IP Telephony, Internet telephony, and Broadband Phone) is the routing of voice conversations over the Internet or through any other IP-based network. ... Wireless Village is a set of specifications for mobile instant messaging and presence services. ... Created at MIT, as part of Project Athena, Zephyr was designed as an instant messenger protocol and application-suite with a heavy Unix background. ...

Closed

• .NET Messenger Service
• OSCAR (AIM and ICQ)
• TOC protocol (AIM)
• YMSG (Yahoo! Messenger)
• Gadu-Gadu
• Gale
• Skype

The . ... OSCAR is AOLs instant messaging and presence information protocol standing for Open System for CommunicAtion in Realtime. ... It has been suggested that TOC2_protocol be merged into this article or section. ... YMSG is the underlying network protocol used by the Y!M instant messaging client, for Yahoo!. Yahoo! Instant Messager supports many features beyond just messaging, including off-line messaging, file transfer, chat, conferencing, voice chat, webcams and avatars. ... Gadu-Gadu is an instant messaging program that is popular in Poland. ... Gale is an instant messaging system developed by Dan Egnor when he was at Caltech. ... Skype (IPA pronunciation: (rhymes with type and pipe)) is a proprietary peer-to-peer Internet telephony (VoIP) network, founded by Niklas Zennström and Janus Friis, the creators of KaZaA, and competing against established open VoIP protocols like SIP, IAX, or H.323. ...

See also

• Instant messenger
• Comparison of instant messaging protocols
• List of instant messengers
• Comparison of instant messengers
• Messaging OSID software interface definition for messaging systems