Works great on Windows/Linux. I was able to replace Corel Photo-Paint, which ironically replaced Photoshop years ago. With that thinking, Open Source & Linux let me replace all the snooping junk from Microsoft & Apple. We have a choice to be free from Apple, Adobe, Microsoft, Corel and others.
GIMP is completely free and open source, meaning you can use GIMP and all of its features without spending a penny. This makes it an excellent case for artists or designers who may not have the budget to spend over US $700 on Photoshop.
While you can still buy CS6 from 2012 without needing a subscription by contacting Adobe support or the cut-down Photoshop Elements, any full-version version of Photoshop past CS6 requires a subscription.
Krita's official documentation is incomplete in some areas, especially for new features that are constantly added. But this is compensated with it's great design and usability which makes it easier to understand how things work.
Lightroom allows, for example, organizing images based on folders, color labels, flags, rating, keywords, GPS location, it can automatically create smart albums (albums that automatically update based on set rules) and it can be set to automatically backup, rename based on set rules, apply default...
Not only does Piexelmator provide easy to use tools that you should expect in any image editor, it also has rare tools such as layer styles, liquify tools and OS X optimized, fast image manipulation engine among others.
Once you hook up your camera to Capture One, the program offers a bunch of useful tools and workflows based on your needs. For example, it has Composition Mode that allows setting up the shot without taking up hard-drive space by replacing the last image taken with the a one as soon as you take i...