If you're talking about making sheets of ripped sprites, I use GIMP. It's got layers so you can save it as an .xcf to preserve them and move them around whenever you want, and export it as a .png for submission.
If you're talking about making sprites, I have no idea, although you can also use GIMP for that. The pencil tool snaps to pixels and it's got countless filters and whatnot, so I don't see a reason not to use it. A lot of people here seem to favour Paint.NET too, although I've never used it so I can't recommend it myself.
If you're talking about making sprites, I have no idea, although you can also use GIMP for that. The pencil tool snaps to pixels and it's got countless filters and whatnot, so I don't see a reason not to use it. A lot of people here seem to favour Paint.NET too, although I've never used it so I can't recommend it myself.