Thanks. I will probably end up keep using gimp and krita.

Looks interesting, hadn’t heard from it. Thanks.

This does not remember the position of each individual window, though. i.e. all programs will (still) open on the same position.

Personally I self-host on a raspberry pi. It took me a few weeks to setup, but it has been running without problems for almost 2 years now at practically no cost (beyond purchase and electricity).