Fire
Multi-protocol internet Instant Messaging client.
Quoted from: http://fire.sourceforge.net/about.php
Fire is a multi-protocol internet Instant Messaging client based on freely available libraries for each service. It is released under the GNU GPL. All services are built off of GPL’d libraries, including firetalk, libicq2000, libmsn, jabber, and libyahoo2 (Linux libraries).
Fire can handle similtaneous connections to AIM®, ICQ®, Yahoo! Messenger®, IRC, MSN® and Jabber.

