Looks very nice and powerful! "Welcome to OLAT - the web-based Open Source Learning Management System (LMS). OLAT is open source, 100% Java and completely free of charge.

The development of OLAT started 1999 at the University of Zurich, Switzerland where it is the strategic learning management system and deployed on the main OLAT server. The University of Zurich leads the further development and has a team of 12 developers pushing OLAT to the next level."