I use Photoshop to edit my photographs. What is the difference between Photoshop and Gimp? - Other then the name Gimp is much more fun!First of all, I agree, the name is more fun than Photoshop. :-)
I liked the question so much, that I thought it would be good to post the reply as an article, since I'm sure many people have wondered the same thing. I know reading comments isn't the easiest way to find out things, and thus this page was born.
For a simple answer about what GIMPShop is, you can check out my page called "What is GIMPShop?"
For a few specific answers to what's the differences between GIMPShop and Photoshop, please see below.
GIMPShop is different than Photoshop in a number of ways.
#1) It is free. Meaning it doesn't cost you anything to own the software - you can download it (legally) from the links to the right of GIMPShop dot Net.
#2) It is Free. No, I'm not repeating myself, it's a different kind of "free". Free as in Freedom. This means you can download it for free, and give it away for free, or sell it, or change it and make it your own. In fact, GIMPShop itself is based on The GIMP, which is a different Free (and free) program. Another term for this is Open Source, although there are slight differences.
#3) GIMPShop is cross-platform. This means that whether you use a Windows computer, an Apple with Mac OS X, or even a computer with Linux on it - you can use GIMPShop. Adobe Photoshop is not available on Linux. And the versions of Photoshop for Windows and Mac are different, (and must be purchased separately - if you have a Mac laptop and a Windows computer, you would have to buy a copy of Photoshop for each if you wanted it).
#4) As close as GIMPShop may act to Photoshop, it's not exactly the same. There are some features (just a few) that Photoshop has that GIMPShop does not. CMYK support, tablet support, and some other advanced features are available in Photoshop, but not GIMPShop, (or the GIMP). There are some features, like ScriptFu, that are available in GIMPShop that Photoshop doesn't have - so it's plus and minus both ways on that.
#5) Third party support is better for Photoshop. Photoshop has been around longer, it makes millions of dollars of profit that it can use to advertise, so it's better known than GIMPShop, so other companies make things for Photoshop because they know it's out there. Open Source support is better for GIMP and GIMPShop.
#6) There are books out there for Photoshop, not too many for the GIMP, and even less for GIMPShop. However, the point of GIMPShop is to make the GIMP more like Photoshop, so these books should help you use GIMPShop as well.
Hope that helps clear things up! Thanks for such a great question!