A huge shoutout to Coderabbit for offering a generous plan for Open Source projects. We use it for PR reviews in AsyncAPI/website and it works really well.
Being an Auth0 ambassador, I would say this is the best option out there for Authentication system across the platforms and doesn't require building the auth from ground up.
Its a great library that feels complete too. I used it way back in my frontend project and the Novu Dashboard just did an awesome job in automating and managing the notifications flow all in my React App.
