What about: Glimpse https://glimpse-editor.github.io/ https://glimpse-editor.github.io/ (a GIMP reskin) or Krita https://krita.org/ https://krita.org/ ? I don'

What about: Glimpse https://glimpse-editor.github.io/ https://glimpse-editor.github.io/ (a GIMP reskin) or Krita https://krita.org/ https://krita.org/ ? I don't believe Photopea https://www.photopea.com/ https://www.photopea.com/ is Open Source, but it's a free web-implementation of Photoshop. Photoshop, itself, is rather general purpose, but if you have a more specific need (like digital painting or photo management and retouching) there are other tools better than Photoshop out there.