Phenotype CMS is a PHP/MySQL/Smarty based Open Source Content Management Framework dedicated to serve two basic principles: Easy Editing & Simple Efficiency
Alfresco is an open source, an open-standards content repository built by the most experienced content management team that includes the co-founder of Documentum.
dotProject is a volunteer supported Project Management application. There is no "company" behind this project, it is managed, maintained, developed and supported by a volunteer group and by the users themselves.
FunkGallery, the FREE full function, highly customizable, open-source photo gallery software system. It uses the powerful PHP language and MySQL database.
Moodle is a free, online Learning Management system enabling educators to create their own private website filled with dynamic courses that extend learning, anytime, anywhere.
Elegant. Effective. Powerful. Free. SMF is all of the above. SMF is a next-generation community software package and is jam-packed with features, while at the same time having a minimal impact on resources.