I'm an OpenMailBox user, and I really hope that they get themselves together.
I recommended OpenMailBox to a friend of mine a month or so ago, and that's
when I found out that registration was closed. It's sad to see that not much
progress has been made; this should be investigated for sure.
Yes, FreeDOS and Debian are optionally-free, and, in the latter case, the
kernel you use doesn't make a difference (since Debian ships with Linux-libre
anyway); Debian GNU/Hurd is not on the list for the same reason as Debian
GNU/Linux.
LibertyBSD's website says that they're still under
They are a French website, and sometimes their English translations are
lacking. I wouldn't be suspicious.