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Open source alternatives to Auth0

Identity and authentication platform. 4 open source projects replace it, led by Keycloak with 37k GitHub stars. Licenses and stars are read from GitHub.

  1. #1

    Keycloak

    ★ 37k

    Identity and access management for apps and services.

    Apache-2.0Last commit 2026-10-12View on GitHub ↗
  2. #2

    SuperTokens

    ★ 15k

    Open source authentication with your own database.

    Apache-2.0Last commit 2026-10-06View on GitHub ↗
  3. #3

    Ory Kratos

    ★ 14k

    API-first identity and user management.

    Apache-2.0Last commit 2026-07-29View on GitHub ↗
  4. #4

    hanko

    ★ 9.0k

    Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.

    NOASSERTIONLast commit 2026-10-12View on GitHub ↗

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Part of the open source alternatives list. Dataset on GitHub.