OpenGL Mathematics (GLM)
ImageMagick 7
darktable is an open source photography workflow application
A standalone, large scale, open project for 2D/3D image processing
A fast image processing library with low memory needs
A layer built on top of the Insight Toolkit (ITK)
A modern, cross-platform, 2D Graphics library for .NET
ArrayFire, a general purpose GPU library
Improved JPEG encoder
Convert images to .ico format
Swiss army knife of image processing
A collection of packages providing extra functionality for GNU Octave
Photo/Video/GIF enlargement using machine learning
Emgu CV is a cross platform .Net wrapper for OpenCV
ScanTailor Advanced is the version that merges STF and STE
ITTT is a Free tool designed to Scan and extract Text from Images.
Lynkeos is an astronomical webcam image processing software for OS X.
Scan Tailor Experimental is an interactive post-processing tool
itom - an Open Source Measurement, Automation and Evaluation Software
JBIG2 Encoder
Scientific Visualisation Made Easy
Easy converting PNM to (MASK+FG+BG)-pdf.
ProStack - a platform for image processing and analysis