Gajim is a Jabber client written in PyGTK. The goal of Gajim's developers is to
provide a full featured and easy to use xmpp client for the GTK+ users. Gajim
does not require GNOME to run, eventhough it exists with it nicely. Gajim is
released under the GNU General Public License 

FEATURES:
* Tabbed chat windows 
* Group chat support (with MUC protocol) 
* Emoticons, Avatars, File transfer, URL grabber, Bookmarks 
* Systray icon, Speller 
* TLS and GPG support (with SSL legacy support) 
* Transport Registration support 
* Service Discovery including Nodes 
* Wikipedia, dictionary and search engine lookup 
* Multiple accounts support 
* DBus Capabilities
* XML Console

WWW: http://www.gajim.org/