Toolkit for working with and mapping geospatial data
JaxoDraw: Feynman Diagrams made easy!
Another drawing editor for LaTeX with PSTricks & TikZ
Vector drawing program for LaTeX using PSTricks
Cross Platform GUI Toolkit
Map Generation Application and API
A graphical Finite State Machine (FSM) designer.
Easy creation of normal maps
Free drawing software for Windows, Mac OS X, and Linux
HTML5 editor, free and open-source website builder based on Silex
Free online HTML website builder
Community Supported Eclipse Visual Editor
The X3DV Module Suite is a free set of Netbeans modules to code in X3D
Vector based drawing software designed for RPGs