Time ago I found Gimp-Painter but I was unable to use it, because it was no Intel mac version to download.
Well, we finally managed to build it for Intel Macs.
If you want to download it, take a look at Gimp-Painter blog.
We are also thinking about adding tool-presets, brushes… etc in a near future, so users can use them and share their own too.
Hope you like it.