JaxoDraw: Feynman Diagrams made easy!
Draw vector graphics to scale using a descriptive language
Another drawing editor for LaTeX with PSTricks & TikZ
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
Professional quality open source illustration software
Extensible vector graphics editor with Latex text support.
Jade is a cross-platform diagram editor built on the Qt framework.
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.