Open-source alternatives to Auth0

Free, open-source, downloadable replacements for Auth0

SSO multi-factor authentication portal for web apps — The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

alternative to Auth0、Okta

28.8k+17/dayApache License 2.0Privacy & Encryptionauthelia/authelia

Linux

KratosCLI

Headless cloud-native auth system — Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

alternative to Auth0、Okta、Firebase

13.9k+2/dayApache License 2.0rank.shelf_excludedory/kratos

macOS Windows Linux

Pocket Id

Self-hosted passkey OIDC and OAuth provider — The most user-friendly OpenID Connect Certified™ and OAuth 2.0 provider that lets users sign in to your applications with passkeys.

alternative to Auth0、Okta

9.1k+19/dayBSD 2-Clause "Simplified" LicensePersonal Cloudpocket-id/pocket-id

Windows

Authn ServerCLI

Self-hosted authentication backend for accounts — Authentication service that keeps you in control without forcing you to be an expert in web security.

alternative to Auth0、Okta

1.3kGNU Lesser General Public License v3.0Password Managerskeratin/authn-server

Windows