multi-platform 4.4BSD- based UNIX-like operating system. Our eﬀorts emphasize portability, standardization, correctness, proactive security and integrated cryptography. As an example of the eﬀect OpenBSD has, the popular OpenSSH software comes from OpenBSD.
NetBSD with Chris Demetriou, Adam Glass, and Charles Hannum, who felt frustrated at the poor quality of 386BSD and believed an open development model would be better. 386BSD was derived from the original University of California Berkeley's 4.3BSD release, while the new NetBSD project would merge relevant code from the Networking/2 and 386BSD releases.
OpenBSD, a new project forked from NetBSD 1.0. The initial release, OpenBSD 1.2, was made in July 1996, followed in October of the same year by OpenBSD 2.0. Since then, the project has followed a schedule of a release every six months, each of which is maintained and supported for one year.