I'm looking for a graphics editor suited for Pixel Editing. On Windows there is Graphics Gale or Pro Motion, but the only thing I found on Mac OS X that comes close ceased development 4 years ago - Pixen.
What I like is a) support for layers, b) the ability to see the image in different zoom levels at the same time, c) Animation Support and d) it's an OS X app and not GTK or AIR.
Of course, Pixen works just fine, but I still wonder if there are comparable alternatives?
PS: Surprised that Mac OS X doesn't come with a simple MSPaint program...