ImageMagick 7
A fast image processing library with low memory needs
darktable is an open source photography workflow application
Library to encode and decode images in WebP format
Swiss army knife of image processing
A collection of packages providing extra functionality for GNU Octave
ProStack - a platform for image processing and analysis
Image processing library in C/C++
Tools to process and visualize scientific data and images
Resilient Image Library - successor to DevIL
Open Source Solid Modeling CAD
LDraw™ editor for LEGO® style digital building instructions.
Easy converting PNM to (MASK+FG+BG)-pdf.
Tools to access streams in PDF-files at the object level.
Easy converting pgm and ppm to (MASK+FG+BG)-djvu.
Scanning Probe Microscopy Controller and Data Visualization Software
Libraries and command line tools for medical image processing.
Complete solution for HDR photography
Graphic Live Mixer