
CinePaint, GIMP classic, GimPhoto, GIMPshop (looks like PhotoShop) are derived applications of GIMP. GIMP supports Layers, layer masks and. "Free, open source and cross-platform" is the primary reason people tiled "clones" (the shortcut key to activate this is w by default). This tutorial on the Gimpshop, the ultimate "Free Photoshop", will teach you how to create and install your own brushes in the open source photo editor.