Who wins?
OpenBSD vs Haiku
Haiku wins 60% to 40%. 9 more put them in the same row. From Operating Systems Tier List. Pick a side.
SilentGoblin4263 on OpenBSD: the best OS for a firewall or a router, pf is a dream to configure
CrispySandwich on Haiku: a BeOS revival for nerds, fun to boot but nothing runs on it
Operating Systems Tier List: the full ranking