GIMP GNU Image Manipulation Program

GIMP is the GNU Image Manipulation Program, a free and open-source cross-platform image editor available for GNU/Linux, macOS, Windows, and other operating systems under the GPL v3 license. The current version 3.2.4 represents a major milestone with the completed migration to GTK3 and the GObject introspection-based Python 3 plugin API, replacing the legacy Python 2 scripting interface and enabling access to the full GIMP API from Python scripts with type introspection and IDE autocompletion support. The software provides professional-grade tools for photo retouching, image composition, original artwork creation, icon design, and scientific image analysis, serving as a viable alternative to commercial software like Adobe Photoshop for many workflows. Key features include a full suite of painting tools including brush, pencil, airbrush, and clone tools with customizable dynamics for pressure, velocity, and random variation, support for pressure-sensitive graphics tablets through GTK input system, tile-based memory management for handling very large images, unlimited layers with 24-bit and 32-bit color depth support per channel, layer masks, alpha channels, and layer groups with blend modes. Color management uses the Little CMS engine with support for ICC color profiles for accurate color reproduction across displays and printers, essential for professional prepress workflows when combined with Scribus for desktop publishing and vector tools from Inkscape. The transformation tools include crop, rotate, scale, shear, perspective, and flip with cubic and Lanczos interpolation algorithms. Scripting and automation are supported through Scheme via Script-Fu, Python 3 through the new GObject-based API, Perl, and C plugins, with a large repository of community-contributed scripts and filters. The roadmap includes non-destructive editing, expanded GEGL operations, and improved CMYK workflow support.