Version: 1.7.0 Released: 9/28/2005 Free Requirements: PHP 4.3 + MySQL
Claroline is a free application based on PHP /MySQL. It's a collaborative learning environment allowing teachers or education institutions to create and administer courses through the web. - More Info....

Version: 1.4.5 Released: 5/12/2005 Free
Moodle is a course management system (CMS) - a free Open Source software package designed to help educators create effective online courses based on sound pedagogical principles. 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 40,000-student University. - More Info....