GIMP

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring. 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. GIMP is expandable and extensible. It is designed to 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. Features and Capabilities: PaintingFull suite of painting tools including Brush, Pencil, Airbrush, Clone, etc.Sub-pixel sampling for all paint tools for high quality anti-aliasingExtremely powerful gradient editor and bLend toolSupports custom brushes and patterns SystemTile based memory management so image size is limited only by available disk spaceVirtually unlimited number of images open at one time Advanced Manipulation Full ALPHA channel supportLayers and channelsMultiple Undo/Redo (limited only by diskspace)Editable text layersTransformation tools including rotate, scale, shear and flip Selection tools including rectangle, rounded rectangle, ellipse, free, FuzzyForeground extraction toolAdvanced path tool doing bezier and polygonal selections.Transformable paths, transformable selections.Quickmask to paint a selection. ExtensibleA Procedural Database for calling internal GIMP functions from external programs as in Script-fuAdvanced scripting capabilities (Scheme, Python, Perl)Plug-ins which allow for the easy addition of new file formats and new effect filtersOver 100 plug-ins already available.