GNU Image Manipulation Program (GIMP)

GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for tasks such as photo retouching, image composition, and image authoring. It provides a comprehensive set of tools including layers, masks, filters, color adjustment, selection tools, and support for a wide range of file formats.

GIMP is extensible via plugins and scripts and runs on multiple platforms (Linux, Windows, macOS). It is widely used by hobbyists and professionals who need a powerful, cost-f...