Hanko is an authentication and user-management platform for modern apps. It replaces passwords with passkeys and adds 2FA and SSO, with data kept under the builder's control.

Passkeys - passwordless sign-in across devices.
SSO and 2FA - enterprise login and second factors.
UI elements - ready-made login components or a custom UI on the same API.
Self-host or cloud - runs on your infrastructure or on Hanko Cloud.
Open source - published code with no vendor lock-in.

It suits developers who want an alternative to Auth0, Clerk or Firebase Auth while keeping full control of user data. Trying it is free with no credit card required.