OpenACS (Open Architecture Community System) is a mature toolkit for building scalable, community-oriented Web applications. Significant functionality is built-in, including user management, user group management, permissions, discussion forums, FAQ management, e-commerce, file storage, content management, and more.

JAHIA is a content management and corporate portal server. It provides a comprehensive, integrated, and out-of-the-box platform for developing, integrating, delivering, and managing content and portlets across intranets, extranets, and the Internet.

GeekLog is weblog software that concentrates on performance, privacy, and security.

WebGUI is a content management framework built to allow average business users to build and maintain complex Web sites. It is modular, pluggable, and platform independent.

Pawfaliki is a wiki written entirely in 1 file. It is designed to be easily configured/hacked by anyone with a little experience of php.

“The Web Framework for Perfectionists with Deadlines.” Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Initially developed at a local newspaper in Kansas, it has since found favour for developing all kinds of sites and applications, from content-heavy sites such as www.lawrence.com to Web 2.0 applications such as www.tabblo.com. Django is quite popular for its extensive documentation.

Moodle is a learning management system for producing Internet-based course Web sites.

Joomla! is a fork of the CMS Mambo, developed by all the original developers. It is backed by Open Source Matters a US-based non-profit, although it is developed by developers around the world, particularly in Australia and Canada. Once Joomla! is installed and running, it is simple for even non-technical users to add or edit content, update images, and to manage data. For many people, the true power of Joomla! lies in the application framework that makes it possible for thousands of devel

OpenCms is a professional level open source Web site content management system.