Image viewer used for sorting and other utilities
Media Player
Open Source Solid Modeling CAD
Modular XSL-FO Implementation for Java.
Another drawing editor for LaTeX with PSTricks & TikZ
Draw vector graphics to scale using a descriptive language
Full featured MUD server with all the trimmings.
Treebolic hyperbolic visualization for WordNet
Fileaxy does file sync, de-duplication, image matching & bulk preview
Multi-Tabbed and Multi-Layered Paint program with a rich tool set.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
Jiddu Krishnamurti's Book of Life|Libro de la Vida
Application which detects musical notes from the microphone.
Java3d scenegraph editor
X3D is the open-standard format for 3D graphics scenes on the Web.
ProStack - a platform for image processing and analysis