Open Source Tools · Alternatives

Open-source alternatives to Auth0

Auth0 is a hosted authentication and authorisation service for applications. Keycloak and authentik can be self-hosted to provide login, social identity brokering and standard OIDC/SAML flows for your own apps.

Auth0 is a commercial product by Okta (official site). Category: Identity, access and secrets management.

Comparison

Tool	Licence	Stars	Last commit	Best for
Keycloak	Apache-2.0Open source	37k	today	Identity and access management for apps and services
authentik	MITOpen source	26k	today	Self-hosted identity provider

Open-source options

Keycloak
Identity and access management for apps and services
Identity provider with single sign-on, OpenID Connect, OAuth 2.0 and SAML, user federation, MFA and fine-grained authorisation. A CNCF project.
Stars
37k
Forks
9.1k
Last commit
today
Apache-2.0Open sourceIdentity, access and secrets management
Alternative toOkta Auth0
authentik
Self-hosted identity provider
Identity provider supporting OIDC, OAuth 2.0, SAML, LDAP, RADIUS and a proxy provider, with flow-based customisation of every login step.
Stars
26k
Forks
2.1k
Last commit
today
MITOpen sourceIdentity, access and secrets management
Alternative toOkta Auth0

Product names are trademarks of their owners. ThreatWire is not affiliated with Okta. The comparison covers what each tool is designed to do, not a feature-by-feature equivalence.