messenger is the World!

Google Talk is a Windows application for Voice over IP and instant messaging, create 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 [...]

Jabber is a free protocol for instantaneous mail, that its operation bases on standard XML and is managed by Foundation XMPP Standards (before Foundation Jabber Software). Jeremie Miller beginning the Jabber project in 1998, sending the first public version in May of the 2000.One of the advantages of Jabber is that its code is free [...]