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Auth

Free and open-source Okta alternatives

Okta (Workforce and customer identity and access management) is a commercial product. These 2 tools do the same job and are free to use or to self-host.
Short answer: the best free alternatives to Okta are authentik and Keycloak. Self-hosting is free; you pay only for the server (a small VPS is about $4–6/mo). Licenses and prices checked 2026-10-01.
  1. 1
    authentik

    Open-source identity provider and SSO

    Identity provider with SSO, SAML, OIDC and LDAP; some enterprise code is paid.

    Open source (MIT (core)) ·★ 26k GitHub stars · last commit 2026-10-07 · details

  2. 2
    Keycloak

    Open-source identity and access management

    CNCF identity and access management server with SSO.

    Open source (Apache-2.0) ·★ 37k GitHub stars · last commit 2026-10-07 · details

Want paid options too? See all Okta alternatives or the full free alternatives list.

FAQ

Is there a free alternative to Okta?+

Yes. authentik and Keycloak do the same job for free; authentik and Keycloak are open source.

What is the best open-source alternative to Okta?+

Keycloak is the most starred on GitHub (37k stars). CNCF identity and access management server with SSO.

Open source: OSI-approved license. Free to self-host: the code is public and free to run yourself, with limits in the license.