JaxoDraw: Feynman Diagrams made easy!
2D & 3D TeX-Aware Vector Graphics Language
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.
Extensible vector graphics editor with Latex text support.
A graphical Finite State Machine (FSM) designer.
Interactive designer for Celtic knots