Keycloak vs SuperTokens

Comparing two open source alternatives to Auth0 . Use the comparison below to decide which one fits your needs.

Keycloak

Apache-2.0

Open-source identity and access management with SSO, OAuth2, OIDC, and SAML support for modern applications.

Visit Full details

SuperTokens

AGPL-3.0

Open-source authentication solution, an alternative to Auth0 and Firebase Auth that you can self-host.

Visit Full details

Side-by-side comparison

	Keycloak	SuperTokens
License	Apache-2.0	AGPL-3.0
Self-hostable	Yes	Yes
GitHub Stars	36,206	15,259
Forks	8,799	848
Open Issues	3,137	164
Last Commit	Aug 16, 2026	Aug 14, 2026
First Released	Jul 2, 2013	Jan 5, 2020
Categories	Authentication & Identity	Authentication & Identity
Tags	#authentication #sso #security #self hosted	#authentication #self hosted #privacy #security

GitHub stars over time

Keycloak36,206

SuperTokens

Similar open source alternatives

Authentik

Open source identity provider and SSO solution that replaces Auth0 and Okta with a self-hostable, flexible authentication platform.

Alternative to:

Auth0

Tinyauth

The tiniest OpenID Certified self-hosted authentication and authorization server, with OAuth, OIDC, LDAP, 2FA, and Traefik/Nginx/Caddy middleware support.

Alternative to:

Auth0

Stack Auth

Open-source authentication platform for Next.js and React, built as an alternative to Auth0 and Clerk.

Alternative to:

Auth0