HEATKEYS

XOOPS CMS is an extensible, OO (Object Oriented), easy to use dynamic web content management system (CMS) written in PHP. XOOPS is the ideal tool for developing small to large dynamic community websites, intra company portals, corporate portals, webl...

django cms is an open-source project from switzerland. the content management system is based on the web framework django and is written in python.

CMS Made Simple - the open source content management system for the rest of us

Croogo - A CakePHP powered Content Management System

EllisLab

Cutting-edge CMS with advanced content, community, interactive and dynamic features. Fully flexible, themeable and extendible: suitable for building almost any kind of website.

LightCMS is a web based CMS for designers and ad agencies. It's a 100% re-brandable and easy to use.

PyroCMS is a multi-lingual Content Management System (CMS) built with the PHP MVC framework CodeIgniter.

Exponent CMS is an Open Source Content Management System, based on PHP, MySQL and the Exponent Framework. Dynamic CMS Content Management Solution with Enterprise Level Content Management Features

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Omeka is a free, flexible, and open source web-publishing platform for the display of library, museum, archives, and scholarly collections and exhibitions. Its five-minute setup makes launching an online archive or exhibition as easy as launching a b...