JAva DIstributed Framework provides a secure and flexible Framework for distributed grid and volunteer computing applications (separate client & server Framework). For more informations take a look at the project page http://jadif.sourceforge.net
POV-Ray Animations for everyone from everyone.
Use the power of many Computer connected to the Internet to raytrace long or complex Animations with the freeware Raytracer POVRay (http:/www.povray.org/). Each Client gets a "work unit" from the Server an
Some example exercises about distributed systems in computer science. Some code examples for Java RMI, Java Server Socket and Peer to Peer Systems written in Java. Probably using the Hibernate framework and some other Java Technologies.