GIMP FOR MAC

From gimp.org

Available on Mac

The open–source GIMP image editor used to be a bit of a faff on the Mac, but it’s now easier to install, learn, and use. It’s still a little buggy compared to commercial image editors, but then again those cost money and GIMP doesn’t. It’s quirkier than commercial rivals, it can feel a little slow at times and it does take longer to learn, but the payoff is a free suite of powerful image–creation and editing tools for free.