Nyquist is a language for sound synthesis and music composition.
A fast way to set photo metadata tags
Retro Computer Image Library
Multi-platform disk cataloguing utility written in java.
Media Player
Draw vector graphics to scale using a descriptive language
Theatrical sound cueing for the rest of us.
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
Full featured MUD server with all the trimmings.
ADAMS is a workflow engine for building complex knowledge workflows.
Another drawing editor for LaTeX with PSTricks & TikZ