The GIMP team released its first ever Mac-native version of the GIMP image editor on Wednesday. Earlier versions of the Photoshop-ish image editor required users to install the X11 windowing system instead of running as a native OS X application.
GIMP 2.8.2 drops X11 requirement
GIMP 2.8.2 offers a long list of image editing features such as digital retouching, perspective and lens correction, filters, and more. The app is available as a free download at the GIMP website.