Gajim is an instant messaging program with the goal of being a full featured and easy to use Jabber client.

* Tabbed chat window and single window modes
* Group chat support (with MUC protocol), invitation, chat to groupchat transformation, minimize groupchat to roster
* Emoticons, Avatars, PEP (user activity, mood and tune)
* File transfer, Room Bookmarks
* Metacontacts Support
* Trayicon, Speller, extented chat history functionalities
* TLS, GPG and End-To-End encryption support (with SSL legacy support)
* Transport Registration support
* Service Discovery including Nodes, user search
* Wikipedia, dictionary and search engine lookup
* Multiple accounts support
* DBus Capabilities. Read more information
* XML Console
* link local (bonjour / zeroconf)
* Gajim is available in 24 languages: Basque, Belarusian, Brasilian, British, Bulgarian, Chinese (simplified), Croatian, Czech, Danish, English, Esperanto, French, Galician, German, Italian, Lithuanian, Norwegian (Bokmål), Polish, Russian, Serbian, Spanish, Slovak, Swedish and Ukrainian

Similar applications: 
Pidgin, Kopete, Google Talk