[Sunspark]

People working in Linux will use GIMP, but you can also use Photoshop in a virtual machine, or possibly even natively using WINE. Here is a link for someone who did just that: https://www.archviet.com/how-to-run-photoshop-on-linux-with-...

[boogies]

Or Krita, some people have a strong preference for it.