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 https://www.openssh.com/, ntpd http://openntpd.org/, and CVS, to be called OpenCVS. See https://openbsd.org/.

Free Online Dictionary of Computing