Acorn[1] is excellent, but it's not free. Once or twice a year it's on sale for 50% off. I prefer it to paint.net as Acorn mostly uses the same keyboard shortcu

Acorn[1] is excellent, but it's not free. Once or twice a year it's on sale for 50% off. I prefer it to paint.net as Acorn mostly uses the same keyboard shortcuts as PhotoShop. That may or not be useful to you, though. [1] https://flyingmeat.com/acorn/ https://flyingmeat.com/acorn/