Zikula
Zikula is an open source content management and portal application. Zikula forked from the PHP-Nuke application in 2001.
No matter what your needs, Zikula can provide the solution. Be that a corporate presence with ecommerce, a simple blog or a community portal, Zikula can do it all. It's your electronic toolbox, a set of tools allowing you to build a dynamically generated web site that five years ago would have cost thousands of dollars to launch.
-Zikula developer