G'MIC (GREYC's Magic for Image Computing) is a framework for image processing that comes with a large number of pre-defined image filters and effects (almost 400, with an extra 300 testing filters). There are several interfaces for G'MIC: a command line tool, a web service, a Qt based interface for real-time webcam manipulation, a library and a GIMP plugin.

GREYC's Magic Image Converter (G'MIC) is a image retouching tool which has been made available as a GIMP plugin. G'MIC comes with a large number of pre-defined image filters and effects (more than 190!) and works on Windows, Linux and Mac OSX. More info and screenshots can be found @ G'MIC homepage.