https://arstechnica.com/gadgets/2020/04/not-actually-linux-distro-review-freebsd-12-1-release/

This month's Linux distro review isn't of a Linux distribution at all—instead, we're taking a look at FreeBSD, the original gangster of free Unix-like operating systems.

The first FreeBSD release was in 1993, but the operating system's roots go further back—considerably further back. FreeBSD started out in 1992 as a patch-release of Bill Jolitz's 386BSD—but 386BSD itself came from the original Berkeley Software Distribution (BSD). BSD itself goes back to 1977—for reference, Richard Stallman was 14 years old then, and Linus Torvalds was only seven.