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I don't know much about the feature set of, as I haven't used it, so I don't know if it would provide the same productivity as Photoshop or GIMP, but being free, it does still provide the cost savings. There can also be additional savings, because GIMP supports more operating systems than Photoshop, including Linux which could also provide significant savings over other operating systems. Their would still be a learning curve switching from one program to another, and you wouldn't know if it would be more productive until after you switch, but the possibility is very real. When using GIMP, other than saving $120 dollars a year, which is a very real savings because the capabilities are comparable for 90-something percent of the user base, GIMP has a different user interface than Photoshop and exchanges some features for others, so a meaningful percentage of Photoshop users would theoretically be more productive with GIMP than with Photoshop, because the interface and features better match their use.
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