An award-winning drawing program for children of all ages
A simple LaTeX {picture} drawing tool
Professional vector flow chart drawing software
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
A hybrid graphics editor and programming environment
Free drawing software for Windows, Mac OS X, and Linux
A drawer for origami crease pattern
OBSOLETE; try http://drawpile.net/ instead!
Vector based drawing software designed for RPGs