Claroline - Open Source Learning Management System

Claroline is an open source program that gives users the freedom to create their own online classroom. With Claroline teachers can produce assessment activities, post and collect assignments, build a wiki, monitor student activities, and create chat rooms or discussion forums. Claroline is available as a free download for Mac, Windows, and Linux systems. Claroline is not a hosted service so you do need to have someone host your installation of Claroline. You can, however, demo Claroline online here.

Applications for Education
If you've been looking for an alternative to Moodle for building your online learning environment, Claroline could be the application for you. The creative freedom that Claroline users have means that teachers can customize activities for any grade level or content area.