Cierge – Passwordless done right (github.com)

Additionally, you can try a demo here: https://cierge.azurewebsites.net

Hi there! Cierge is an OpenID Connect server that handles user signup, login, profiles, management, social logins, and more. Instead of storing passwords, Cirege uses magic links/codes and external logins to authenticate your users.

You can find a good list of FAQs on our our GitHub page.