SwiftShader is a high-performance CPU-based implementation
Image management application
SDL with native XInput
Hewlett-Packard's Linux imaging and printing software
An award-winning drawing program for children of all ages
A portable, multi-platform, command-line driven graphing utility
Swiss army knife of image processing
Lynkeos is an astronomical webcam image processing software for OS X.
The cross-platform library behind the Hugin photo stitcher
Image browser and viewer for Unix - X/Motif
Open Source Solid Modeling CAD
Display, convert, and edit raster image and vector image files
LDraw™ editor for LEGO® style digital building instructions.
Cross Platform GUI Toolkit
Drawing, graphics conversion, software development, administration.