Mutt-ng is a fork of mutt-1.5.7 and stands for Mutt Next Generation.
mutt next generation (mutt-ng) is a fork of the well-known email client mutt with the goal to both incorporate all the patches that are floating around in the web, and to fix all the other little annoyances of mutt.
Was started by Andreas Krennmair because his girlfriend comes from Iceland. ;)