[Mystrl]

https://ccse.lbl.gov/BoxLib/

Is it this thing at the very top of the search results?

[ReverseCold]

Fwiw my first page had nothing to do with anything computer related, except for the last result, which was how to make dialog boxes in Windows.

First result: https://littlefreelibrary.org

Search: Box library

[philipov]

Moreover, it was neither of the 2 Box libraries I was referring to. So that makes 3.

https://www.box.com/

https://pypi.python.org/pypi/python-box/