Alien Skin just released the new version of their flagship Exposure software, adding features like a histogram, History panel, and Spot Heal tool that make it a much more powerful stand-alone RAW photo editor than ever before.
Sick of Camera RAW and Lightroom? Want a brand-spanking-new RAW photo processor and non-destructive editor to work in that isn't made by Adobe? Your wish is ON1's command.
Google announced this week that its Google Photos app on Android now supports non-destructive editing. You're now free to make drastic changes without worrying about writing over the original file, because all edits are now reversible.