ProStack - a platform for image processing and analysis
A Free Experimental System for Image Processing
Digital image processing programs for Windows and Linux systems.
Advanced image processing toolbox for Scilab on Unix/Linux/Mac OS
Testing images for scientific purposes
Bildster is an image processing library for educational purposes.
A Multi-functional GUI-based Program for Image Processing and Analysis
A Library for Interactive Modelling and Visualisation
An Image Processing Framework
A C++ template library extending syntax towards mathematical notation
Computer vision and image processing library for Qt.