Java Image Processing Program
Python scripts for personal use in Blender
Video and Image Analysis Extension for Firefox
YUVviewer is a small tool for developers to preview raw image formats.
webCAMotion is a program that uses your webcam to simulate a mouse.
Free yourself
A homebrew image viewer.
pgf/TikZ diagram editor
Universal graphics translator
very good CAD software
For the handling and manipulation of the HTML5 <canvas> element