Jade is a cross-platform diagram editor built on the Qt framework.
Development has moved to github
A cross-platform C64 hires bitmap editor...
Gimpel3D - 2D/3D Stereo Conversion Editor
Interactive designer for Celtic knots
SWF editor with support for action script.
Pear3DEngine is a modern and modular 3D development framework
KPEdit - A 2D skeletal animation editor.
Overlay-based comics translation tool
Cuts 3D objects from polystyrene foam (EPS/XPS)
automata editor