Free photo software

The GNU Image Manipulation Program, commonly known by its acronym GIMP ( ; always stylized in capitals; formerly, The GIMP), is a free and open-source raster graphics editor.

digiKam is a free and open-source image organizer and tag editor written in C++ using the KDE Frameworks.

F-Spot is a discontinued image organizer, that was designed to provide personal photo management for the GNOME desktop environment. The name is a play on the word F-Stop. F-Spot can be used for basic photo editing and management.

Photo manager for GNOME

gThumb is a free and open-source image viewer and image organizer with options to edit images. It is designed to have a clean and simple user interface and follows the GNOME Human Interface Guidelines and integrates well with the GNOME desktop environment.

Piwigo is a free and open-source web-based photo gallery, originally written by Pierrick Le Gall. It is written in PHP and requires a MySQL database.

thumb|330x330px|Digic 4 from Canon SX30 Digital Imaging Integrated Circuit (often styled as "DiG!C") is Canon Inc.'s name for a family of signal processing and control units for digital cameras and camcorders. DIGIC units are used as image processors by Canon in its own digital imaging products. Several generations of DIGICs exist, and are distinguished by a version number suffix.

ExifTool is a free and open source software program for reading, writing, and manipulating image, audio, video, and PDF metadata. As such, ExifTool classes as a tag editor. ExifTool can also be used as a metadata removal tool for supported file types, except for PDF, as old metadata is never actually deleted. (However, after running ExifTool the old metadata may be removed permanently using the "qpdf" utility) It is platform independent, available as both a Perl library (Image::ExifTool) and a command-line application.

UFRaw (originally named after its founder '''Udi Fuchs's Raw, the backronym Unidentified Flying Raw''' replaced it as the full name) is an application which can read and manipulate photographs in raw image formats, as created by many digital cameras. UFRaw is available as both as a stand-alone program and as a plugin for GIMP (only on non-Microsoft Windows systems). As a stand-alone program, UFRaw can be invoked with a graphical interface, or as a command line batch processing utility.

open-source project enabling management and web publication of photographs and other media

Phatch (PHoto & bATCH) is a raster graphics editor used to batch process digital graphics and photographs. Phatch can be used on the desktop as a GUI program or on the server as a console program.