Model Railway CAD program
A Java image editor
Another drawing editor for LaTeX with PSTricks & TikZ
Vector drawing program for LaTeX using PSTricks
Map Generation Application and API
Free yourself
Create symmetric sprites: browse, save to PC, or store online
Font editor
Easy creation of normal maps
Jade is a cross-platform diagram editor built on the Qt framework.
FNT Font editor
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
Interactive designer for Celtic knots
Symmetric Sprite Editor
Helping to transcribe scanned old documents