eZ Publish CMS

eZ Publish is an enterprise open source web content management system used by media as well as other business, governmental, non-profit, and educational organizations needing a robust and well supported CMS with unending flexibility. It runs on Apache web server with the PHP language and a database (e.g. MySQL).

Features:

• multiple versions (revisions) of every web element--and if you like, multiple translations of every version
• extremely configurable--not JUST a shop, blog, corporate site, forum, gallery, webDAV--but whatever you need it to be--and whatever else you need it to be tomorrow
• server environment may be stand-alone or clustered
• supported by eZ Systems and a mature developer community
• fine-grained user access control
• open source (proprietary license also available)
• read a more detailed list at ez.no

Among content management systems, there are very few which are open source, enterprise-grade, and versatile enough to accomplish almost any task as your needs grow. eZ Publish is one, and it receives strong ratings.

An enterprise content management system must be as solid as a rock. eZ Publish has a strong history, a dynamic company (eZ Systems of Norway), and a mature developer community. And it's as open as a clear blue sky.