SuperTokens Core is an open-source authentication backend that provides session management, email/password login, passwordless authentication, and social login capabilities as an alternative to commercial services like Auth0, Firebase Auth, and AWS Cognito. Developers use it to add production-ready authentication to their applications with full control over the infrastructure and without vendor lock-in. The project supports multiple authentication flows including OAuth and offers both self-hosted and managed deployment options.

141 open issues · last updated Jul 21, 2026