An award-winning drawing program for children of all ages
Swiss army knife of image processing
Model Railway CAD program
Display, convert, and edit raster image and vector image files
Convert Netpbm programs to GIMP plug-ins
Cross Platform GUI Toolkit
3D Procedural Modelling and Procedural Texturing Tool in OpenGL/C++
Deep paint and stop-motion animation software
Unofficial Windows builds of FontForge
A GIMP based, studio designed for industry pros & power users
Free yourself
A full featured cross-platform image library
A 3d rendering framework