BerkeleySoftwareDistribution, or perhaps BusinessSystemsDevelopments.
"*BSD" is often used when talking about FreeBSD, NetBSD and OpenBSD as a group. They all originally came from the same source code, the Berkeley Software Distribution from the University of Calfornia, Berkeley. BSD4.2 was perhaps the most influential version. Released in the early 1980's (1983, 1984?). They are all released under the BSD License?.
Has a few Free distributions:
and a few others:
etc...
As quoted by fortune(6): There are two major products that come out of Berkeley: LSD and UNIX. We don't believe this to be a coincidence. -- Jeremy S. Anderson
Good things Berkeley gave us:
Bad things Berkeley gave us:
Yet Another Three Letter Acronym
See also CategoryOperatingSystem
63 pages link to BSD: