Perhaps Gradia [0], Pinta [1], or Krita [2].

[0]: https://gradia.alexandervanhee.be/ [1]: https://www.pinta-project.com/ [2]: https://krita.org/en/

https://photoflare.io/ is the one I've found to be most usable. Pinta is just unpleasant to use at high resolutions and it's buggy.

I easily modified pinta to do exactly this. You mean overlay, right? It can overlay, draw, manipulate, and I added a better file navigator so I can see which imagery I want to overlay to begin with. My use case was scientific in nature. What is yours, if you don’t mind my asking?

IrfanView in Wine, f12 opens a really old-school paint toolbox.

Photocraft has been working alright for me. I really struggled to learn GIMP, and I haven't found any easy lightweight image editing tool that replaces Paint.NET for me before trying Photocraft. It's still a little confusing since I'm not used to photoshop-like bindings and layout, but it hasn't been too hard to adjust. (I also only ever use it for small simple edits, drawing, cropping, color gradients, background removal, etc.)

Use KolourPaint, it's a windows 9x/XP paintbrush clone with only a few improvements tacked on.

GIMP of course.

KPaint

[dead]