FileConv is a set of utility classes that allow java programmers to load/write 3d files of various formats to/from 3d applications and convert between various file formats so that people using different 3d applications can collaborate on the same project
Xi3D is an X3D renderer and browser for 3D Web content. It contains compliant parsers for VRML'97 types, a java scenegraph, XML bindings using SAX2, a content converter, full runtime and event model, DOM Level 2, vecmath
A client - server game where all mechanical objects (robots) can be programmed, using standard programming languages, to battle other robots. Will be a great learning tool for robotics and programming.