Spring3D enables the object-oriented creation and manipulation of 3D geometry running on top of most 3D API (i.e. JOGL or Android's OpenGL). The reference engine is based on Java3D and is in the application process for being made a Spring Extension.
Quick3dApplet - a java applet for displaying interactive 3d on a webpage. This is a fast renderer that should be viewable on most browsers without the viewer having to load extra plugins (uses java 1.1). It can read the 3ds model format.
nemosomen is a framework for designing open source, network based, multimedia (video/openGL/sound/MIDI) realtime toys
a suite of tools for distributed development, processing of media. It tries to shift most of the working process in realtime processes.