JavaScript client-side editor for general diagramming & whiteboarding
HARFANG 3D source code public repository
an Open Source BPMN 2.0 / DMN 1.1 Modeler
A premier mind-mapping software written in Java
Model Railway CAD program
EasyABC is an open source ABC editor
A Java image editor
Convert any image to gerber and drill files
show and edit eulumdat files
Another drawing editor for LaTeX with PSTricks & TikZ
View64 is a image viewer for C64 images
Tracked Music Editor
Java3d scenegraph editor
Reorganize M32/X32 show files
Open Source Solid Modeling CAD
Vector drawing program for LaTeX using PSTricks