Cross platform (lin/win/mac) geographical information system (GIS)
Pencil2D is an easy, intuitive tool to make 2D hand-drawn animations
powerful and versatile motion graphics application
Swiss army knife of image processing
Display, convert, and edit raster image and vector image files
A library for scientific data visualization
Portable Graphics Primitives
Cross Platform GUI Toolkit
A set of freeware applications for viewing/processing P-CAD files.
A simple vector graphics animation program
Interactive visualization of plate tectonics.
An infinite-canvas paint program
An open source spatio-temporal data mining library
Interactive designer for Celtic knots
A powerful C++ class library for image manipulation