Iris for macOS is available. It's the native photo and video library I always wanted. I hope you like it, too. https://irisphotos.app
@bbech @tylerhall Technically anything can work with your Photos library b/c the "Photos Library.photoslibrary" data is actually a folder, and inside is an "originals" folder with unedited source media!
It's nice that Apple is only hiding the "guts" of your Photos data, and you can get to it via "Show Package Contents" — and point other apps like Iris Photos to read/scan that folder.
However, doing this sort-of-thing with an app that doesn't "read-only" is risky!