I've been trying to find some good free or open source alternatives to Photoshop. This is what I've found, so far. Have I missed any other good ones?
Photography:
GIMP (Windows, Mac, Linux)
Paint.NET (Windows)
Photopea (Browser)
Pxlr (Browser)
Sumo Paint (Windows, Mac, Linux)
Painting:
FireAlpaca (Windows, Mac)
IbisPaint (Android)
Krita (Windows, Mac, Linux, Android)
Medibang (Windows, Mac, Android)
MyPaint (Windows, Mac, Linux)
Sketchbook (iOS, Android)
Pixel Art:
Aseprite (Windows, Mac, Linux)
GrafX2 (Windows, Linux, Android)
GraphicsGale (Windows)
LibreSprite (Windows, Mac, Linux)
Lospec Pixel Editor (Browser)
Microsoft Paint (Windows)
Pixelorama (Browser, Windows, Mac, Linux, Raspberry Pi)
PixiEditor (Windows)
Pixilart (Browser, Android, iOS)
Pixel Studio (Windows, Mac)
Definitely seems like GIMP is a must-have. Is there anything Photoshop can do that GIMP just can't do right now?