BSD-4-Clause-UC license usage

Eric S. Raymond esr at
Thu Apr 30 11:09:50 UTC 2020

Matthew Selsky via devel <devel at>:
> Hi Hal and team,
> Much our of NTS code uses BSD-4-Clause-UC instead of BSD-2-Clause (our preferred license for new code).
> What this license selection intentional?

No. It's a historical accident.

> Is BSD-4-Clause-UC intended for code owned by the University of California, or does it make sense for others to use this license as well?

BSD-4-Clause-UC is the original version of the license.  It was propagated by the BSD family
of Unix variants and came into wide use because of that.  Over time, the Board of Regents has
gradually removed clauses and now recommends BSD-2-Clause.

It's not considered controversial to move from BSD-4-Clause-UC to one of the more recent variants
approved by the Board of Regents.  Mark, as our external-relations specialist, should sign off
on this, but I'm willing to do it.
		<a href="">Eric S. Raymond</a>

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