The GIMP is a multiplatform photo manipulation tool. GIMP is an acronym for GNU Image Manipulation Program. The GIMP is suitable for a variety of image manipulation tasks, including photo retouching, image composition, and image construction. It has many capabilities. It can be used 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.
May 27, 2007 - Seashore – Mac version of Gimp, an open-source Photoshop. Fewer features but faster. It's got all the basic image editing you'd need, like.
Full suite of painting tools including brushes, a pencil, an airbrush, cloning, etc.