Keycloak vs SuperTokens: which one to choose in 2026?
Both are open source alternatives to Auth0. We compare license, tech stack and features to help you decide which fits your team best.
| Keycloak | SuperTokens | |
|---|---|---|
| Category | Auth & Identity | Auth & Identity |
| License | Apache-2.0 | Apache-2.0 |
| GitHub stars | ~36.5k | ~15.3k |
| Tech stack | Java, Quarkus | Java, PostgreSQL |
| Replaces | Auth0, Okta | Auth0, Clerk |
Keycloak has more GitHub stars, which usually indicates a larger community (not necessarily that it's the best option for your use case).
Keycloak
Open source SSO and identity management, an alternative to Auth0/Okta.
Pros
- Permissive Apache-2.0 license, with 36k+ GitHub stars and a verified deployment
Things to consider
- Higher memory usage than lighter alternatives
SuperTokens
Authentication with ready-to-integrate SDKs, an alternative to Auth0/Clerk.
Pros
- Very fast integration thanks to the SDKs
Things to consider
- Less flexible than Ory/Keycloak for very custom flows
Key features
Keycloak
- SSO and LDAP/Active Directory federation
- Social login (Google, GitHub...)
- Granular role and permission management
SuperTokens
- Official SDKs for React, Next.js, Node, Python...
- Secure session management by default
- Social and passwordless login included
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