Gajim aims to be an easy to use and fully-featured XMPP client. It is open source and released under the GNU General Public License (GPL).
FEATURES:
Never miss a message, keep all your chat clients synchronized
Invite friends to group chats or join one
Simply send pictures, videos or other files to friends and groups
Chat securely with End-to-End encryption via OMEMO or PGP.
Use your favorite emoticons, set your own avatar
Keep and manage all your chat history
Organize your chats with tabs
Automatic spell-checking for your messages
Connect to other Messengers via Transports (Facebook, IRC, ...)
Lookup things on Wikipedia, dictionaries or other search engines directly from the chat window
What are you doing just now? Which music are you listing to this moment? How are you feeling lately? If you like, show your friends by setting your activity, tune, and mood
Even more features via plugins, for example: Image Previews, Location Previews, Anti Spam, ...
ADVANCED FEATURES:
Support for multiple accounts
One of your friends has accounts everywhere but you just want one contact you can easily write to? Group multiple contacts to one Meta-Contact
XML console to see what's happening on the protocol layer
Serverless messaging (Bonjour/Zeroconf), BOSH
Support for Service discovery including nodes and search for users
DBus capabilities
LANGUAGES:
Gajim is available in 29 languages: Basque, Belarusian, Brasilian, British, Bulgarian, Chinese (simplified), Croatian, Czech, Danish, English, Esperanto, French, Galician, German, Hebrew, Hungarian, Italian, Japanese, Kazakh, Lithuanian, Norwegian (Bokmål), Polish, Russian, Serbian, Slovak, Spanish, Swedish, Turkish, and Ukrainian
