Another drawing editor for LaTeX with PSTricks & TikZ
JaxoDraw: Feynman Diagrams made easy!
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
A graphical Finite State Machine (FSM) designer.
Advanced script editor IDE for squirrel/pawn/lua and more
Filtered is a tool for editing SVG filters
The X3DV Module Suite is a free set of Netbeans modules to code in X3D