GIMP (photo manipulation) Gimp 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. This is only a very quick list of GIMP features: Painting Full suite of painting tools including Brush, Pencil, Airbrush, Clone, etc. Sub-pixel sampling for all paint tools for high quality anti-aliasing Extremely powerful gradient editor and blend tool Supports custom brushes and patterns Advanced Manipulation Full alpha channel support Layers and channels Multiple Undo/Redo (limited only by diskspace) Editable text layers Transformation tools including rotate, scale, shear and flip Selection tools including rectangle, ellipse, free, fuzzy and intelligent Advanced path tool doing bezier and polygonal selections. Extensible Over 100 plug-ins already available Animation File Handling File formats supported include bmp, gif, jpeg, mng, pcx, pdf, png, ps, psd, svg, tiff, tga, xpm, and many others Load, display, convert, save to many file formats SVG path import/export Much, much more! also try Google Picassa, OpenOffice.org Draw, or Krita
	Inkscape (vector graphics) Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format. Supported SVG features include shapes, paths, text, markers, clones, alpha blending, transforms, gradients, patterns, and grouping. Inkscape also supports Creative Commons meta-data, node editing, layers, complex path operations, bitmap tracing, text-on-path, flowed text, direct XML editing, and more. It imports formats such as JPEG, PNG, TIFF, and others and exports PNG as well as multiple vector-based formats. Inkscape's main goal is to create a powerful and convenient drawing tool fully compliant with XML, SVG, and CSS standards. We also aim to maintain a thriving user and developer community by using open, community-oriented development.
	Blender (3D animation) Blender is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback. Windows for animation curves/keys, outliner, schematic scene diagram, non-linear video sequence editing, character animation action editor, non-linear animation mixer, image/UV editing, file/image selection and file management. A range of 3D object types including polygon meshes, NURBS surfaces, bezier and B-spline curves, metaballs, vector fonts (TrueType, PostScript, OpenType).