The only exception I am aware of is Powder but this version is old
AFAIK my GCW0 port is still the latest version of Powder available
As for Nethack, I have a GCW0 friendly build of it, but I can't release it, as the code I used requires data files with uncertain copyright status (and won't run with vanilla Nethack data).
If you think you could help me verifying the copyright status (it requires some datafile extracting skills), I'll gladly share my port's code with you
Here's a bunch of screenshots to tempt you