I use GIMP, which is open source, and thus free. In general I can't afford to pay for software, so I've been pretty much an exclusive Linux user for the last decade or so. From what I understand GIMP is similar to Photoshop (which I have never used), at least I can follow a large number of Photoshop tutorials for graphics stuff, though some of the more arcane functions (some filters and such) are missing or in slightly different places.
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I use GIMP, which is open source, and thus free. In general I can't afford to pay for software, so I've been pretty much an exclusive Linux user for the last decade or so. From what I understand GIMP is similar to Photoshop (which I have never used), at least I can follow a large number of Photoshop tutorials for graphics stuff, though some of the more arcane functions (some filters and such) are missing or in slightly different places.