Wikipedia
Chamilo is a free software (under GNU/GPL licensing) e-learning and content management system, aimed at improving access to education and knowledge globally. It is backed up by the Chamilo Association, which has goals including the promotion of the software, the maintenance of a clear communication channel and the building of a network of services providers and software contributors.
The Chamilo project aims at ensuring the availability and quality of education at a reduced cost, through the distribution of its software free of charge, the improvement of its interface for 3rd world countries devices portability and the provision of a free access public e-learning campus.
Chamilo comes in two versions. The LMS (or "1.*") version directly builds on Dokeos. Chamilo LCMS (or 3.0) is a completely new software platform for e-learning and collaboration.