Shachar Shemesh <psql(at)shemesh(dot)biz> writes:
> In particular, the front page claims that PostgreSQL is under the BSD
> license. The problem is that there are two.
We use the one shown in the COPYRIGHT file in the top directory of the
source tree, which is also available for your reading pleasure by
clicking on the "license" link on that same front page.
regards, tom lane