Darktable - is an open source photography workflow application

[rafpug]

Prerequisites

•*nix (tested: Debian, Ubuntu, Arch Linux, Funtoo, Gentoo, Fedora, Macintosh OS X with Macports) -  Windows64bit vers.2.0
•We strongly recommend using a 64bit operating system!
•Required packages:
libsqlite3, libjpeg, libpng, libpugixml, rawspeed (supplied), gtk+-3, cairo, lcms2, exiv2, tiff, curl, gphoto2, dbus-glib, fop, openexr, libsoup2.4

•Optional: gcc >= 4.6

Can also be applied to files .jpg .png .bmp .tiff etc.etc ..

https://www.darktable.org/usermanual/ch03s04s04.html.php

Regards
Raf