A full-featured, Free Source Software (GNU/LGPL), multilingual, Wiki/CMS/Groupware hybrid written in PHP and maintained by an active and international community of volunteer contributors.
Major features include articles, forums, newsletters
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, blogs, a file/image gallery, a Wiki, drawing, trackers, a directory, polls/surveys and quizzes, a FAQ, chat, a banner management system, a calendar, maps, charts, Mobile Tiki (PDA and WAP access), RSS feeds, a category system, a theme control center, workflow engine, live support, Shoutbox, ACLs, and more.
The project is LGPL. The notes below about "may conflict with GPL" are caused because TikiWiki includes tripled licensed code. Please see: http://www.ohloh.net/forums/10/topics/1730
Tiki started in October 2002 (ohloh stats are not yet updated) [Less]