It's is a raw decoder based on top of libkdcraw, which is a KDE library around dcraw. It can export to 8bit or 16bit PNG, and can apply some transformation on the images, like white balance adjustement, noise reduction, chromatic aberation correction... It fully transfer metadata from the raw file to PNG, there is basic support for color management.

Copyright (c) 1995-2008 Cyrille Berger