This is your open source version of Photoshop, My personal feeling is that open source rocks! I won’t go into a rave about why right now, but Gimp.. is just as good if not better than the Adobe application photoshop and whats more its free!
GIMP is an acronym for GNU Image Manipulation Program. Use GIMP as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc. GIMP is expandable and extensible; it can be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.