GIMP offers a nice feature set, for a free image editor
GIMP, the original Open Source image editor, has finally been upgraded to a fully-native OS X app. GIMP has long been a popular image editor for those who didn’t need the power (or expense) of Adobe Photoshop, even though it required the use of the X11 environment to run. Now that it’s a native app, you have no excuse not to give it a shot if you’re in the market for an image editor.