Gimpshop - like Photoshop
You like free Photoshop. This is it.
GIMPShop is a hack of the open-source photo editor, the Gimp, to make
it look and act very much like Photoshop. For those who don’t already
know, the Gimp is a powerful, open source image editing application.
For more info on the Gimp see this page. GIMPshop is essentially the same program with some cosmetic changes
Original Plasticbug site is busy. So, you can download from here as a mirror site. Search gimpshop.