digiKam is described as 'Advanced digital photo management software with features to organize, tag, compare, and process photo collections, supporting multiple formats including RAW' and is a very popular Photo Manager in the photos & graphics category. There are more than 100 alternatives to digiKam for a variety of platforms, including Windows, Mac, Linux, iPad and iPhone apps. The best digiKam alternative is XnView MP. It's not free, so if you're looking for a free alternative, you could try XnView MP or RapidRAW. Other great apps like digiKam are Adobe Lightroom, RawTherapee, PhotoPrism and Gwenview.
ZPS X is a photo organizer which can also edit (RAW) photos. It can do everything :-)