Board Thread:Support Requests - Designing Your Wikia/@comment-840648-20160328002618/@comment-26231129-20160328023740

Like Blaster Niceshot said above, I would recommend Gimp, I've used all of them and find Gimp the easiest to work with. I would recommend using a Mac with Gimp, though. I don't know if it's the age of my Windows or just the fact that it' s Windows, but Gimp works far better on the iMacs I use. In addition you can also use:
 * Inkscape - This is better suited for drawing than for editing photographs.
 * Paint - If you are on Windows, I personally despise Paint, but I have been able to use it in some situations in the past.
 * Paint.net - It's like Paint, but slightly better.
 * And if all you want is to edit a photo, Photoscape, in case you just want something basic, such as text on a photo.