[ Thanks to ubuntuportal for this link.
]
“Darktable is an free open source software development by
Johannes Hanika and Henrik Andersso.this software designed for
users interested in maneuvering photographies including RAW,
meaning unprocessed camera captures with zero modifications in a
database with numerous options to edit and enhance.“Draktable come tries to fill the gap between the many excellent
existing free raw converters and image management tools such as
(ufraw or f-spot). The user interface is built around efficient
caching of image metadata and mipmaps, all stored in a database.
The user will always be able to interact, even if the full
resolution image is not yet loaded.”