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.