alt Hacker NewsAdobe Photoshop, the most used tool for professional digital art, especially in raster graphics editing, is was first example of a perfectly fine commercial desktop application converted to cloud application with a single purpose - increased profit for Adobe.
Master Collection CS6 still works excellently, and is now (relatively) small enough to live comfortably in virtuo. Newer file formats can be handled with ffmpeg and a bit of terminal-fu.