Done
Moodle
Moodle is a free, open source course management system (CMS) used by educators to create effective online learning communities. You can download and use it on any computer you have handy (including webhosts), yet it can scale from a single-teacher site to a University with 200,000 students. Moodle has a large and diverse user community with more than 330,000 registered users, speaking over 70 languages in 196 countries. Moodle is available in a variety of download packages with different levels of stability, as well as via CVS. A number of additional modules/plugins and language packs are also available.
Sakai
Sakai is a free and open source product that can be used to create online collaboration and learning environments. Many users of Sakai deploy it to support teaching and learning, ad hoc group collaboration, support for portfolios and research collaboration. Sakai is built and maintained by the Sakai community, which is actively developing new Sakai tools: IMS Common Cartridge, SCORM, blog tool, shared whiteboard, shared display, multipoint audio, multipoint audio, pod-casting, IMS Tool Interoperability, and others.
ATutor
ATutor is an open source web-based learning content management system (LCMS) designed with accessibility and adaptability in mind. Administrators can install or update ATutor in minutes, develop custom themes to give ATutor a new look, and easily extend its functionality with feature modules. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily import prepackaged content, and conduct their courses online. Students learn in an adaptive learning environment.