I will present the G’MIC framework for image processing and its different interfaces. G’MIC has been already recognized as a popular plug-in for GIMP, but it is actually much more than that. It defines a complete script language for image processing and defines several interfaces to use it, with different complexity levels : low-level uses (command-line, C++ library) to higher-level GUI (GIMP plug-in, webcam GUI or as a web-service).