Geeklog is a PHP/MySQL based application for managing dynamic web content.
"Out of the box", it is a blog engine, or a CMS (portal system) with support for users, comments, trackbacks, multiple syndication formats, spam protection, and all the other vital features of such a system.
The core Geeklog distribution can easily be extended by the many community developed plugins to radically alter its functionality. Available plugins include forums, image galleries, and many more.
Speciality: extended access right management for teams and idividuals.