These are the ones I know of and use.
PaintDotNet
GNUIMP (GIMP) - compatible with Photoshop projects!
Graphics Gale
All are 100% cost-free, no deals required.
Feel free to add to the list in the ‘towel section’ down below.
5 Likes
I’ll add Krita for digital painting.
Oh! I also want to add a pixel art one I found recently.
4 Likes
LibreSprite, a free fork of Aseprite, for pixel art:
And seconding Krita.
5 Likes
This online editor is becoming quite popular among people, considered to be a really good alternative to Photoshop - Photopea | Online Photo Editor
Edit: I forgot to mention IrfanView, my favorite image viewer app - https://www.irfanview.com/
5 Likes
I use medibang and firealpaca these are my favourite free paint programs 
Other ones I have dabbled in/know of that I haven’t not been mentioned for reference
- Mypaint
- mspaint (I mean it’s good right lol)
4 Likes
PicPick is an all-in-one program, primarily system tray-based, that provides a full-featured screen capture tool, an intuitive image editor, a color picker, a color palette, a pixel-ruler, a protractor, a crosshair and even a whiteboard. I use the portable one.
The reg one…
Since Gizmo has retired and he closed his freeware site, it has been replaced by “Gizmo’s Best”.
And here is some graphic programs he recommends…All free…
3 Likes
Here are some more portable graphic apps…
3 Likes
@dogetail Technically, MSPaint is not free, though it’s one of those things where it does not actually have an external source, so yeah…lolz
Thanks for all the input; there’s probably a lot out there but I only know what I know and that seems to be very closed off I guess…
4 Likes
I’ve seen an older mspaint for download tho lol
Not sure but it says “freeware”
4 Likes
Got this in my RSS feeds…
https://www.makeuseof.com/free-photoshop-alternatives/?utm_source=MUO-NL-RP&utm_medium=newsletter
4 Likes