Leading Open Source WCM
A semantic personal publishing platform with a focus on aesthetics, web standards, and usability.
Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow, discussion capabilities, news aggregation, metadata functionalities using controlled vocabularies and XML publishing for content sharing purposes. Equipped with a powerful blend of features and configurability, Drupal can support a diverse range of web projects ranging from personal weblogs to large community-driven sites.
EZ Publish is an open source enterprise PHP content management system developed by the Norwegian company eZ Systems. eZ Publish is freely available under the GNU GPL version 2 license, as well as under proprietary licenses that include commercial support.
Other WCM
SilverStripe is an intuitive content management system atop a powerful programming framework.
DotClear is a neat blogging platform. Since DotClear 2, it is a multi-blogs platform, really suited for enterprise blogging. Developped by a french community, DotClear still lakes the support of a strong english speaking community.
TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets. It offers full flexibility and extendability while featuring an accomplished set of ready-made interfaces, functions and modules.
Plone is easy to use. The Plone Team includes usability experts who have made Plone easy and attractive for content managers to add, update, and maintain content.
Plone is easy to install. You can install Plone with a click-and-run installer, and have a content management system running on your computer in just a few minutes.
Plone is international. The Plone interface has been translated into over 30 languages, and tools exist for managing multilingual content.
This is a simple blog engine written using ASP.NET MVC
Frog CMS simplifies content management by offering an elegant user interface, flexible templating per page, simple user management and permissions, as well as the tools necessary for file management.
c5 is a Framework for developing content centric websites.
Radiant is a no-fluff, open source content management system designed for small teams.
ImpressCMS is a community developed Content Management System for easily building and maintaining a dynamic web site. Keep your web site up to date with this easy to use, secure and flexible system.
It is the ideal tool for a wide range of users: from business to community users, from large enterprises to people who want a simple, easy to use blogging tool.
CMS Made Simple, an open source content management system, allows for faster and easier management of website content.
A content management framework (CMF), a custom web application builder, and content management system (CMS).
An integrated web content management and corporate portal server; 100% Java based; Available under a collaborative source license (contribute or pay paradigm).
Alfresco is the first open source enterprise-scale document management system that includes a modern content repository, an out-of-the-box portal framework for managing and using content designed to work with standard portals, and a groundbreaking Common Internet File System (CIFS) interface that provides Microsoft Windows file system compatibility. Alfresco takes the lessons of building document management systems for the last 15 years and applied them to build an open source content management system that is easier to use, more scalable and more adaptable.
MODX is an open source content management system and web application framework for publishing Web content.