'''BSD''' refers to all sorts of things, but notably the version of [UNIX] from the University of California at Berkeley (the '''B'''erkeley '''S'''tandard '''D'''istribution) and the license thereof. Tcl (which also started out at the University of California) uses a very similar license, though without the advertising clause (''i.e.'' you are not required to put a big message in saying that you are using Tcl and acknowledging the original authors.) ---- [Cateogry Acronym]