SIMD-accelerated libjpeg-compatible JPEG codec library
Swiss army knife of image processing
Advanced PNG optimization program
Display, convert, and edit raster image and vector image files
Lynkeos is an astronomical webcam image processing software for OS X.
Retro Computer Image Library
medical image conversion utility
Drawing, graphics conversion, software development, administration.
Tools to process and visualize scientific data and images
Convert Netpbm programs to GIMP plug-ins
Convert BMP images into Sixel images
Various small and useful command-line utilities
Extend abcm2ps to support direct generation of PNG, SVG and PDF files
Open Source Solid Modeling CAD
Complete solution for HDR photography
Simple utility to convert PNG to JPEG
A C99 implementation for reading/writing WMF and EMF Graphic Metafiles
Create PDF from JPEG scans and photos