There’s this wiki post, which includes some links to drivers, as well as this post for apps.
The Hubitat package manager app is also a great resource, not just for discovering apps and drivers, but also simplifying their installation and updates.
There also the package explorer app that supplements the package manager. I'll have to find a link.
EDIT: I now see that is no longer supported / maintained, so package manager is the place to look.
This Community forum is also a good source for finding drivers, though not ideal for that exact purpose. If you can't find something you can always ask....