General-Purpose PDF Library for Java and .NET
Convert heightmaps to stl
Spritesheet Cutter Level Editor Animation Tester gridcutter
Cross-platform 2D and 3D game engine
Interactive designer for Celtic knots
Imaging application for GNUstep and MacOS
3D .NET engine for Windows, Linux, Mac
LithoGraphX, 3D data analysis and visualization
A powerful, free and open-source tool for TextureAtlases/Spritesheets
YUVviewer is a small tool for developers to preview raw image formats.
Font editor
pgf/TikZ diagram editor
Superseded by the official Gimp release: http://www.gimp.org/downloads
a java based desktop screen recorder