F-Spot is described as 'Personal photo management application for the GNOME desktop environment. F-Spot is based on MONO' and is a popular app in the Photos & Graphics category. There are more than 50 alternatives to F-Spot for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad. The best alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try digiKam or darktable. Other great apps like F-Spot are XnView MP (Free Personal), Adobe Lightroom (Paid), XnView (Free Personal) and Shotwell (Free, Open Source).