Oldenburger Lernprogramme zur Informatik (OLLI)

http://olli.informatik.uni-oldenburg.de/katalog.html

Nils Faltin, University of Oldenburg

A collection of online tutorials with interactive Java applets. The tutorials cover a wide range of Computer Science topics. The applets generally require readers to demonstrate proficiency with the algorithm or topic under discussion.

The site and most of the tutorials are in German, with exceptions noted below.

The tutorials appear to have been created 2001-2004.

Tutorial topics