OpenGL Mathematics (GLM)
ImageMagick 7
A layer built on top of the Insight Toolkit (ITK)
darktable is an open source photography workflow application
Library to encode and decode images in WebP format
A fast image processing library with low memory needs
A powerful cross-platform raw photo processing program
A standalone, large scale, open project for 2D/3D image processing
Resize images and animated GIFs in Go
A modern, cross-platform, 2D Graphics library for .NET
ArrayFire, a general purpose GPU library
Swiss army knife of image processing
A collection of packages providing extra functionality for GNU Octave
Photo/Video/GIF enlargement using machine learning
Lynkeos is an astronomical webcam image processing software for OS X.
ITTT is a Free tool designed to Scan and extract Text from Images.
Scan Tailor Experimental is an interactive post-processing tool
Resilient Image Library - successor to DevIL
Image processing library in C/C++
itom - an Open Source Measurement, Automation and Evaluation Software
A dithering software based around floats
High-performance image processing C++ application for Windows Desktop