JaxoDraw: Feynman Diagrams made easy!
Open Source Solid Modeling CAD
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Camera recorder
Modular XSL-FO Implementation for Java.
Video producer
Multi-Tabbed and Multi-Layered Paint program with a rich tool set.
Image viewer used for sorting and other utilities
Audio Editing Suite
ADAMS is a workflow engine for building complex knowledge workflows.
Full featured MUD server with all the trimmings.
Another drawing editor for LaTeX with PSTricks & TikZ
Java Audio Plugin System
Tracked Music Editor
Treebolic hyperbolic visualization for WordNet
Xj3D is an open-source Java codebase for the X3D Graphics standard.
X3D is the open-standard format for 3D graphics scenes on the Web.
Application which detects musical notes from the microphone.
Jiddu Krishnamurti's Book of Life|Libro de la Vida