In the link that @naught101 shared, Koha is the first suggestion. I configured and deployed Koha to a group of early adopter libraries in Vermont. It’s super powerful and probably has all the features a Stuff Library could ever need. Unfortunately, as you commented, it’s bringing a lot of features unnecessary to a Stuff Library. The built-in OPAC is my favorite part, but the deep customization is a close second.

As an aside New Zealand just dominates the library FOSS space. It amazes me how any of the big corporate players can even compete. For anyone who wants to put together an online digital library, check out Greenstone.

I know some petrochemical engineers, analysts, and a tribologist. I asked them about exactly this. Their responses, to a one, is: the oil will not run out; it will just become too expensive to extract. Now, I’m just some jerkwad on the internet, and my anecdote is only that.