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SuperTokens

supertokens/supertokens-core
Ready to use There is an official hosted version — open it and go. No install, no deployment.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

AuthenticationAuth0 alternative
SuperTokens website screenshot

From the README

SuperTokens is an open-core alternative to proprietary login providers like Auth0 or AWS Cognito. We are different because we offer:

Stars
★ 15.3k
Language
Java
License
Apache-2.0
Last updated
2026-09-21
Category
Auth & identity
Section
🌏 Going global
Open online Repository

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