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List Open Source Alternatives to Proprietary Software
(www.opensourcealternative.to)
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.
In a professional setting, GIMP is shit compared to Photoshop. For 95% of normal users, it's more powerful and full featured than you'll ever need.