Here, again, we mention only free software applications.
hugin.sourceforge.net presents the Hugin panorama photo stitcher, which can be used for building panoramas much larger than GIMP can build.
www.sane-project.org is the official site of the Scanner Access Now Easy (SANE) project, which provides standardized access to most raster scanners.
ufraw.sourceforge.net is the UFRaw website. This project aims at reading and manipulating raw images from digital cameras. We recommend using it from the corresponding GIMP plug-in, but it can also be used as an independent application.
www.darktable.org describes Darktable, a photography workflow application and RAW developer with many more features than UFRaw. It works ...