I think that as a photo editor, GIMP is the best option for open source. But as a print designer the lack of being able to work in CMYK and 1 bit images is a big problem.
Fortunately Krita does the CMYK thing extremely well, but it also lacks the ability to handle 1 bit images.
Wondering if anyone out there has discovered a lesser known open source app that works with 1 bit images well? Maybe something made for old school pixel art?
It seems strange to me, since even a more modern format like png supports 1 bit.