About 12 months ago, I changed from using Microsoft Windows 7 Professional (I hated Windows 10) and decided to learn and install Linux Mint 19 Cinnamon 64-bit edition as a replacement operating system. Obviously this meant that my existing licensed versions of Adobe Lightroom 5.6 and DXO Optics Pro 10 would no longer work. Therefore, after taking some time out trying different software packages and learning them, I've now standardised my workflow using Art, Darktable, Gimp and Rawtherapee, These are all open source and multi-platform applications. Thus available for Linux, Windows and Apple Mac. I really like Darktable the most not just for it's end results in processing, but it's capable of fully using 100% of my fast Nvidia GPU graphics card in Open CL mode thus able to do parallel processing. That means it uses both CPU & GPU at the same time very effectively "Great Stuff".
Here are the respective links to the Linux based software I now use.
Art
Darktable
Gimp
Linux Mint
Rawtherapee
7000802RRiver Thames Cookham
7000803RRiver Thames Cookham
7000810RRiver Thames Cookham
D300S16RBoulters Lock Maidenhead