Desktop productivity tool No. 4: GIMP 2.6
The name is an acronym for GNU Image Manipulation Program, and among free software advocates GIMP has become a staple recommendation as an alternative to Photoshop. Many of Photoshop's tools are re-implemented here: layers, editable text objects, support for a remarkable number of image formats, even support for Photoshop's own brushes. One major plus is the panoply of third-party scripts and add-ons that extend the program's functionality. But the program's biggest minus remains, even after many years, its clunky user interface -- as shown in elements such as the non-native file picker dialog in the Windows edition.