Jabber is an IM (instant messaging) server written in C. It uses the open XMPP protocol. Its information flow is in XML format, enabling cross-platform communication. Through Jabber converter, Japper can also connect with MSN, Yahoo and other instant messaging servers. In one fell swoop, it breaks the current incompatible pattern of IM platforms. Google talk is implemented using Jabber/XMPP.
View the Jabber installation documentation here:
http://edu.codepub.com/2009/0316/2064.php 
