OpenBSD

    A version of BSD Unix with an emphasis on
   security.  A lot of security work that is ported to other free
   operating systems originates with OpenBSD and a lot of code
   review is done here.

   Sub-projects of OpenBSD include implementations of SSH
   (http://openssh.org/), ntpd (http://openntpd.org/),
   and CVS, to be called OpenCVS.

   OpenBSD Home (http://openbsd.org/).

   (2005-01-17)