I do not have affiliation with any of them, I just use them time to time in my demos, that was the first ones that come to my mind…
I would also go with self hosted and open source ones, but the Auth0 free tier seems to be very generous, if is only for a pet project.
Another option, used a lot in the enterprise world, and this time open source:
Add authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It’s all available out of the box.
You’ll even get advanced features such as User Federation, Identity Brokering and Social Login.
For more details go to about and documentation, and don’t forget to try Keycloak. It’s easy by design!
