Auth0→5 open-source options

Open-source Auth0 alternatives

Managed authentication and authorization platform. Below are curated open-source options listed on OpenElse, with notes on when each is a better fit.

Official site: auth0.com

Keycloak

Battle-tested open-source identity and access management.

Self-hostable

Authentik

Flexible identity provider with flows, SSO, and proxy auth.

Self-hostable

SuperTokens

Open-source auth with session management and optional managed cloud.

Self-hostable

Logto

Open-source Auth0 alternative focused on OIDC and developer UX.

Self-hostable

Authelia

Single sign-on and 2FA companion for reverse proxies.

Self-hostable