Acorn is a sleek, light-weight, and affordable image editor built with modern Mac OS X in mind.
Over the past few weeks I’ve been lucky enough to use Acorn through the beta testing period and it’s a very nice product. I’ve been creating all of my “developer art” in Acorn for my upcoming game, Bullfrog 2.
There are some great simple to use image editing tools and some pretty cool image filters built right in. But, I think the power comes from the plug-in API that allows extending the application using Python and Objective-C.