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://www.openssh.org/)}, {ntpd (http://www.openntpd.org/)}, and CVS, to be called OpenCVS.OpenBSD Start .(2005-01-17)