darktable is an open source photography workflow application
A collection of packages providing extra functionality for GNU Octave
Scientific Visualisation Made Easy
ProStack - a platform for image processing and analysis
Multi-platform API for Image Processing systems in Life Sciences
Graphical Interface for Medical Image Analysis and Simulation
Effective Linear Algebra and Computer Vision Library with JAVA
A cross-section image analysis tool
matlab 2D image processing GUI toolbox for flow visualization
iwatermark is a image watermarking web application.
Computer vision and image processing library for Qt.
Python-accessible toolkit for Geoscience & Remote Sensing Applications