Ask HN: What do you use for app authentication?

[arxv33]

I am building a react native app - I am looking to see what oauth AuthN/AuthZ options are out there. I have come across and used Amazon Cognito before and AppSync/Firebase but I am more looking open source options out there.

[coverj]

Some options include - Ory Kratos/Hydra - Keycloak - Identity Server

[elviejo]

I have just today discovered Auth0.

I have read some of the tutorials and find it very developer friendly.

Will comment later once I have actually tried it.