gimp
GIMP Plug-In Registry
http://registry.gimp.org/
Making Animated GIFs With Free Software in Four Steps
http://blog.ahfr.org/2008/03/making-animated-gifs-with-free-software.html
Added 17 years ago
GimpItalia.it :: Index
http://www.gimpitalia.it/forum
Handy Tweaks To Make GIMP Replace Photoshop | How-To | Smashing Magazine
http://www.smashingmagazine.com/2009/04/03/8-handy-tweaks-to-make-gimp-replace-photoshop/
GIMP is the favorite graphics editing program of many designers and graphic artists. It is free and compatible with Windows, Mac and Linux (the two big reasons for its popularity). It has a wide array of features, as well as plug-ins, filters and brushes. Documentation is primarily available in online communities, as well as through extensive add-ons. [Updated May/02/2017]