WeeChat

WeeChat is a fast, light and extensible chat client. It runs on many

platforms (including Linux, BSD and Mac OS).

WeeChat is:

- modular: a lightweight core with plugins around

- multi-protocols: IRC and Jabber (other soon)

- extensible: C plugins and scripts (Perl, Python, Ruby, Lua and Tcl)

- free software: released under GPLv3 license

- fully documented: user's guide, API, FAQ,.. translated in many languages

Development is very active, and bug fixes are very fast!