RawTherapee is a powerful, free, cross platform photo editing program that is my primary post-processing tool.
The website can be found here. A bit daunting at first, but it is worthwhile spending time and getting to know how to use it.
Through trial and error (many, many of them…), I “think” I have found a very useable custom profile that I can apply to pretty much any raw file I have. I have tested it on raw files from Canon 1D (classic), 20D and 5D Mk1 and my Fuji X10.
Grab the file, unzip, and place it in your profiles folder. In my system, openSuse 13.2, the profiles folder is in
/home/marcel/.config/RawTherapee/profiles
If you find this and try it out, let me know how it worked for you!