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Looking for a good photoshop alternate
(lemmy.ml)
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.
I'm quite fond of Paint.net on Windows, especially with the boltbait plugin pack.
It's powerful, easy to use and if it cannot do something, there are tons of user developed plugins.