Blue Marine is an interesting multitask program that`s completely free (and of open code) to process images. It lets you develop and catalogue RAW images. It is very apt for specialist photos, like Nature: you can include notes of changes and travel plans with maps. It can also create geotags in the photos, and import GPS data. It works with numerous image formats, like JPG, TIFF, CR2, CRW, DNG, MRW, NEF, PEF and SRF.
Blue Marine`s authors warn you that at the moment it has no editing functions, although they should be on the way with new updates.
The program`s interface is very modern and is divided into various parts, depending on the configurations you`ve chosen. Among its functions you`ll find an image viewer, photo album creator, video viewer, slide creator, etc.
Blue Marine is a program worth trying.