Artists of LD: what are your favorite tools for game jams?

I personally use Krita for 2D art since it's free and easily customizable. I am considering trying out photoshop since it's the industry standard, but I know there are plenty of ~~cheaper~~ tools out there worth trying out.

What tools do you use?

  • What do you like about them?
  • What do you use them for?
  • Have you considered any other tools?