Cross-platform
Anomey is a small but effective framework and CMS for developing and maintaining web sites. (GPL)
Cross-platform
BIGACE is a multi-site, multi-language and multi-user Web CMS, whose keypoints are ease of use, speed, flexibility and a simple Installation. (GPL)
Cross-platform
CMS Made Simple provides a fast and easy way to create a web site and manage its contents. (GPL)
Cross-platform
CMScout is a free and open-source CMS (Content management system) for Scouting related groups from around the world. (GPL)
Cross-platform
CMSimple is a simple content management system; for the smart maintenance of small commercial or private sites. (AGPL)
Windows

DotNetNuke is an open source web application framework written in VB.NET for the ASP.NET framework. (BSD)
Cross-platform
Drupal is a free software package that allows an individual or a community of users to easily publish, manage and organize a wide variety of content on a website. (GPL)
Cross-platform
Enano is a free wiki and portal system that grows with your site – from just a couple of pages to a wiki, a blog, and so much more. (GPL)
Cross-platform
Hippo CMS is a enterprise ready user friendly content management system for large sets of information. (Apache)
Cross-platform
ImpressCMS is a community developed Content Management System for easily building and maintaining a dynamic web site. (GPL)
Cross-platform
Joomla! is a free, open source content management system for publishing content on the world wide web and intranets. (GPL)
Cross-platform
Mambo is a free software / open source content management system for creating and managing websites through a simple web interface. (GPL)
Cross-platform
MediaMosa is a state-of-the-art, scalable Middleware Media Distribution Platform and facilitates access to, and usage of (shared) storage capacity, metadata databases, transcoding- and streaming servers. (GPL)
Cross-platform
nc-cms is a website Content Management System (CMS) designed with the primary goals of being user friendly and easy to integrate, while retaining the most important features of a modern day CMS. (Zlib)
Cross-platform
PHP-Fusion is a light-weight open-source content management system (CMS) written in PHP. (AGPL)
Cross-platform
Plone is an open source CMS built on top of the Zope application server. (GPL)
Cross-platform
Radiant is a no-fluff, open source content management system designed for small teams. (MIT)
Cross-platform
SilverStripe is an intuitive content management system atop a powerful programming framework. (BSD)
Cross-platform
SPINE is a webbased Content Management System implemented in Perl. (GPL)
Cross-platform
Symphony is an open source content management system designed to let developers program exclusively in the XSLT templating language. (MIT)
Cross-platform
TYPO3 is a free and open source enterprise level content management system. (GPL)
Linux
TYPOlight is a web based content management framework that can easily be extended. (LGPL)
Cross-platform
The WebGUI Content Engine is Web Done Right. It’s the premier platform for managing all your web based content and applications. (GPL)
WordPress
The ultimate cms ever
Cross-platform
XOOPS is an extensible, OO (Object Oriented), easy to use dynamic web content management system written in PHP. (GPL)
Popularity: 19% [?]
