SwiftShader is a high-performance CPU-based implementation
ImageMagick 7
Powerful and easy-to-use embedded GUI library with many widgets
Library to encode and decode images in WebP format
Fast and simple digital painting software
Image management application
A fast image processing library with low memory needs
A free, high-quality, and portable font engine
Display, convert, and edit raster image and vector image files
Hewlett-Packard's Linux imaging and printing software
Img is a collection of format handlers for the Tk photo image type.
Drawing, graphics conversion, software development, administration.
Doing 3D with Tcl
Lynkeos is an astronomical webcam image processing software for OS X.
A simple 3D framework in C++
Cross Platform GUI Toolkit
Resilient Image Library - successor to DevIL