qutIM is module-based multiprotocol instant messenger, based on Nokia Qt. All its functionality and features are implemented through separate plugins.
Official site — http://qutim.org/ DEAD
Wiki — http://wiki.qutim.org/ DEAD
Official twitter — http://twitter.com/qutim DEAD
If you want old releases — check this: https://github.com/euroelessar/qutim/releases/tag/archival_release
Main source repo — https://github.com/euroelessar/qutim