I'm looking for a self-hosted rental system.
It's for a smaller institution, which is renting out hardware (for free and non-commercial use), and the current system (EasyJob) is way too bloated.
The service should be publishable to the internet, ideally hostable via Docker or a ProxMox VM, and should have a user-management.
I was thinking about using something like an e-commerce service?
There is nothing native (though a few options have been played with, AFAIK never completed because...), but there are a ton of integrations. You can use webhooks to teams, there are python wrappers for the API, even a google docs integration.
Probably the lowest code option would be to find someone else's tool for snipe-it (sorry I've never looked), or do something like snipe it to google sheets to be imported as a CSV or something.
Or take a peek at some others in the same territory, or maybe ticketing systems with simple asset management.
But i think something like snipe-it, if not exactly, is going to be the right territory of what you're looking for