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FOSS Image editor
(discuss.tchncs.de)
If it's free and open source and it's also software, it can be discussed here. Subcommunity of Technology.
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
https://www.photopea.com/
Not open source though.
And it's a web app which is fairly annoying. Otherwise it's pretty good.