Ideally, I'd *love* to see a port for OpenBSD (openbsd.org).
I'm looking for a nice web-based email client for myself and my users (welll, it's really a personal hobby than business oriented).
However, if I had a vote for Linux I would say Gentoo.
Dedicated time to porting into OpenBSD would be great in the sense that it would allow you to place time into doing a security audit in your code. This would be a great
PR move on two fronts: PHB's and geeks.