SuperTokens

SuperTokens

An open-source authentication and session-management framework that developers add to their applications and run self-hosted, keeping user accounts and sessions in their own database, or via a managed service. It provides email/password, social, and passwordless login recipes, secure token-based session handling designed to resist common attacks, and prebuilt UI plus SDKs for popular frontend and backend stacks. Teams adopt it as a transparent, customizable alternative to closed identity clouds like Auth0 and Cognito when they want to avoid vendor lock-in, control where user data lives, and inspect or extend the auth logic themselves.