A portable, multi-platform, command-line driven graphing utility
Swiss army knife of image processing
Model Railway CAD program
Advanced PNG optimization program
Open Source Solid Modeling CAD
The cross-platform library behind the Hugin photo stitcher
medical image conversion utility
Retro Computer Image Library
Tools to process and visualize scientific data and images
Lynkeos is an astronomical webcam image processing software for OS X.
Img is a collection of format handlers for the Tk photo image type.
Display, convert, and edit raster image and vector image files
LDraw™ editor for LEGO® style digital building instructions.