Though Im sure many people in the masto communities already know about it, here's a recommendation for Photopea. A very real alternative to Photoshop for many uses, this is a browser-based app that has multiple functions of PS, all in the browser. You do not need to be connected to the internet once you have opened the webpage (I need to do a couple of tests on this to find out how it works). All your artwork is kept on your own computer, so uses the local-hosting model for privacy and security (eg similar to Cryptpad). It is incredibly powerful, and free. Search for more information to find out more about it.
