OpenBSD
More info
- Creator
- Theo de Raadt
- Released
- Type
- Operating system
- License
- ISC / BSD
- Website
- openbsd.org
The BSD variant that puts security and code correctness above all else — and the origin of OpenSSH.
Theo de Raadt forked it from NetBSD in 1995. The method is systematic code auditing rather than patching after the fact, plus hardening techniques that often became standard everywhere: ASLR, W^X, pledge() and unveil().
The project's exports outweigh the project itself — OpenSSH, LibreSSL, pf, tmux and OpenNTPD all come from here and are used by practically everyone. The motto about "only two remote holes in the default install" refers to a deliberately very small default install.