Gajim

Gajim is an instant messaging client for the XMPP protocol which uses the GTK toolkit. The name Gajim is a recursive acronym for "Gajim's a jabber instant messenger". Gajim runs on Linux, BSD, macOS, and Microsoft Windows. Released under the GPL-3.0-only license, Gajim is free software. A 2009 round-up of similar software on Tom's Hardware found version 0.12.1 "the lightest and fastest jabber IM client".

Features Gajim aims to be an easy-to-use and fully featured XMPP client. Gajim uses GTK (PyGObject) as GUI library, which makes it cross-platform compatible. Some of its features:

Group chat support Emojis, Avatars, File transfer Systray icon, Spell checking TLS and end-to-end encryption support with OMEMO, OpenPGP, OTR (with a plugin) Transport Registration support Service Discovery including Nodes Wikipedia, dictionary and search engine lookup Multiple accounts support D-Bus Capabilities XML Console Jingle voice and video support (removed since version 2.0.0 due to lack of maintainer) HTTP file upload Read markers Hats Gajim is available in Basque, Bulgarian, Chinese, Croatian, Czech, English, Esperanto, French, German, Italian, Norwegian (Bokmål), Polish, Russian, Spanish, Slovak, Swedish, Ukrainian and others.

Third-party plugins Gajim supports various third-party plugins (official list).

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