GIMP is a versatile and full-featured image processing and paint package.  Through it’s scripting interface it can also provide online batch processing systems, a mass production image renderer or function as an image format converter.

GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions.

Key features include:

  • 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
  • Tile based memory management so image size is limited only by available disk space
  • Layers and channels
  • Multiple Undo/Redo (limited only by diskspace)
  • Editable text layers
  • File formats supported include bmp, gif, jpeg, mng, pcx, pdf, png, ps, psd, svg, tiff, tga, xpm, and many others
  • SVG path import/export

Home Page: http://www.gimp.org/
Project Page: http://developer.gimp.org/
Language: C
Platform: Windows, Linux, OSX
License: GPL