MSN Messenger is often used to refer to the .NET Messenger Service (the protocols and server that allow the system to operate) rather than any particular client.
Yahoo Messenger: -
Yahoo! Messenger is a popular advertisement-supported instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger is provided free of charge and can be downloaded and used with a generic "Yahoo! ID" which also allows access to other Yahoo! services, such as Yahoo! Mail, where users can be automatically notified when they receive new email. Yahoo! also offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.
Yahoo! Messenger was originally launched under the name Yahoo! Pager on 1998-03-09.
In addition to instant messaging features similar to those offered by ICQ, it also offers (on Microsoft Windows) features such as: IMVironments (customizing the look of Instant Message windows, some of which include authorized themes of famous cartoons such as Garfield or Dilbert), address-book integration and Custom Status Messages.It was also the first major IM client to feature BUZZing and music-status. Another recently added feature is customized avatars.
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Yahoo Messenger 6.0
Yahoo Messenger 7.0
Yahoo Messenger 8.0
Multi Yahoo Patch 8.0
ICQ Messenger: -
ICQ is an instant messaging computer program, which was first developed by the Israeli company Mirabilis, now owned by Time Warner's AOL subsidiary. The first version of the program was released in November 1996 and ICQ became the first Internet-wide instant messaging service. The name ICQ is an initialism on the phrase "I seek you". America Online (AOL) acquired Mirabilis on June 8, 1998 for $407 million. Today ICQ is used by over 31 million users worldwide.
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Paltalk: -
Paltalk is an internet chat service for text, voice and video chatting. The Paltalk Messenger program is in a free, banner-supported format as well as an ad-free version that requires users to subscribe. Paltalk is only available to users of Microsoft Windows. The program now identifies itself as PaltalkScene, a change that was made in September 2007.[1]
The company itself is a privately held New York based company founded in 1998. It is run by President and COO, Joel Smernoff. Paltalk claims 4 million users worldwide,[2] making it the largest voice and video chat community on the World Wide Web.[3] It also owns and operates HearMe, a video and voice-enabled web conferencing service that allows users to conduct group meetings.[4]. Paltalk became popular after Firetalk, an earlier voice/music chat program, became unable to maintain operation due to a lack of adequate funding.
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Trillian messenger: -
Trillian is a proprietary multiprotocol instant messaging application for Windows created by Cerulean Studios that can connect to multiple IM services, such as AIM, ICQ, Windows Live Messenger, Yahoo! Messenger, IRC, Novell GroupWise Messenger, Bonjour, Jabber, and Skype networks (the latter four with Trillian Pro which allows for additional plugins).
Initially released July 1, 2000, as a freeware IRC client, the first commercial version (Trillian Pro 1.0) was published on September 10, 2002. The program was named after Trillian, a fictional character in The Hitchhiker's Guide to the Galaxy by Douglas Adams. The old version of the official web site even used to have a shrine to Douglas Adams on its front page. There are currently two types of Trillian available, the original and free Trillian Basic 3 and the commercial Trillian Pro 3. An upcoming product called Trillian Astra (4.0) has been announced and is currently in alpha testing.
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GTalk: -
Google Talk (GTalk) is a Windows and web-based application for voice over internet (VOIP) and instant messaging, offered by Google. The first beta version of the program was released on August 24, 2005.
Instant messaging between the Google Talk servers and its clients uses an open protocol, XMPP, allowing users of other XMPP clients to communicate with Google Talk users. VoIP in Google Talk is based around the Jingle protocol. The technology used within the Google server network however is not publicly known.
The Google Talk client is currently only available for Windows (2000, XP, Server 2003, and Vista). With the release of the Google Talk gadget, users of all platforms supported by Adobe Flash Player can also use Google Talk.[1] Many other XMPP clients are compatible with Google Talk, and support a variety of other platforms.
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