GTKRawGallery is a free RAW photo management software. It can be used for RAW image processing, like you might have guessed from its name, but all the other photo formats are also supported. Before starting conversion of RAW photographs, they can first be edited, transformed, metadata changed, effects applied. Direct uploads to Dropbox and sharing via Facebook, Flickr and Picasa are also available.
Via Frédéric DEBAILLEUL