Model Railway CAD program
Draw vector graphics to scale using a descriptive language
JaxoDraw: Feynman Diagrams made easy!
Another drawing editor for LaTeX with PSTricks & TikZ
Cross Platform GUI Toolkit
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
Professional quality open source illustration software
Free drawing software for Windows, Mac OS X, and Linux
Interactive designer for Celtic knots
Output Processing script from Java AWT/Swing paint call
Filtered is a tool for editing SVG filters
A powerful C++ class library for image manipulation
Open Source CAD
The X3DV Module Suite is a free set of Netbeans modules to code in X3D