pervasive Jabber protocol and their plethora of clients. Jabber, or should I write XMPP?, has a VoIP architecture laid out. This VoIP protocol is called Jingle 13 13 . This page < http://en.wikipedia.org/wiki/Jingle_%28protocol%29 14 14 > lists all Jingle compliant clients. Listed are, Coccinella 15 15 Google Talk 16 16 Kopete