Hi, basically it's a very large collection of pretty much any kind of filters and effects one can think of in one plugin, so the chances are good that if there's no built-in GIMP filter/effect of some kind, G'MIC may very well have it. The version I have currently installed (not the latest, I should upgrade it) has 590 filters and effects. Some of them are quite esoteric, but there's plenty of genuinely useful stuff in there.Hi Mika, What does the G'MIC plugin do, if it is good and is it easy to install?I've been using GIMP as my primary raster graphics editor since the late 90's and it's satisfied my needs pretty well, especially with the G'MIC plugin mentioned by a few others.
As for the installation, it's pretty easy, basically just downloading the plugin and copying the file to GIMP's plug-in folder and restarting GIMP will do. The plug-in path can be found in GIMP's preferences.
This is one of the few open source projects I've actually donated some money to.