Emgu CV is a cross platform .Net wrapper for OpenCV
A lightweight file manager for X
Display, convert, and edit raster image and vector image files
A library for import of WordPerfect Graphics images.
Cross-platform, scientific graphics plotting library
medical image conversion utility
Processing and analysis of Small Angle X-ray Scattering (SAXS) data.
Imaging application for GNUstep and MacOS
Img is a collection of format handlers for the Tk photo image type.
Tools to process and visualize scientific data and images
Retro Computer Image Library
Drawing, graphics conversion, software development, administration.
IIPImage is an advanced high-performance image server and client
Various small and useful command-line utilities