Tiki Wiki CMS Groupware

Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (35+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware using PHP, MySQL, Zend Framework, jQuery and Smarty. Actively developed by a very large international community, Tiki can be used to create all kinds of Web applications, sites, portals, knowledge bases, intranets, and extranets.

It has support of wiki, forum, Blog, Articles, Image gallery, map server, link directory, Bug tracker and lot more.