SuperTokens

Key Features

• Passwordless Login – Authenticate users via magic links or OTPs without requiring passwords.
• Social Login – Support for popular OAuth providers like Google, Facebook, GitHub, and more.
• Email and Password Login – Traditional auth flow with secure email/password storage and validation.
• Phone Number Login – Authenticate users using their phone numbers via OTP.
• Session Management – Built-in secure session handling, including automatic token refreshing.
• Multi-Factor Authentication (MFA) – Add an extra layer of security with configurable MFA options.
• Multi-Tenancy / Organization Support – Supports enterprise use cases like SSO and organization-level access.
• User Roles and Permissions – Fine-grained access control via role-based systems.
• Microservice Authentication – Seamlessly manage authentication across distributed services.

Discover how SuperTokens offers secure login and session management with a developer-friendly open source architecture.

In the world of modern app development, implementing secure authentication can be both essential and frustrating. You want to provide a seamless experience for users while keeping your infrastructure simple and under your control. Many turn to third-party platforms like Auth0, Firebase Auth, or AWS Cognito—powerful tools, but ones that often come with trade-offs in flexibility, cost, or vendor lock-in.

Enter SuperTokens, an open source authentication solution designed for developers who want full control over their auth systems without reinventing the wheel.

Why SuperTokens?

SuperTokens helps you add secure login and session management to your applications with minimal hassle. It offers SDKs for popular languages and frameworks, including Node.js, Go, Python, React.js, React Native, and even plain JavaScript. Whether you're building a web app, a mobile app, or a microservice architecture, SuperTokens integrates smoothly into your stack.

What sets SuperTokens apart is its architecture, which is thoughtfully divided into three parts to optimize for both security and developer experience.

The Frontend SDK handles the session tokens on the client side and renders ready-made login UI components that you can easily drop into your app. On the server, the Backend SDK provides robust APIs for common tasks like signing users in and out, refreshing sessions, and handling multi-factor auth. Sitting beneath it all is the SuperTokens Core, a lightweight HTTP service that manages the core authentication logic and database operations.

This separation ensures that your frontend stays focused on user experience, while the backend maintains clean, secure control over sessions and authentication workflows.

Built for Real-World Use

SuperTokens supports a wide variety of authentication strategies. You can offer users passwordless login, social login, or the more traditional email and password setup. Phone number-based login is also available, and advanced features like multi-factor authentication and role-based access control are built in.

For organizations, multi-tenancy and enterprise SSO support are available, making SuperTokens scalable for both startups and larger teams. It’s also an ideal choice for microservice architectures, thanks to its flexible session management capabilities.

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SuperTokens gives you the power and flexibility of a custom-built auth system, without the overhead. And because it’s open source, you can inspect, modify, or self-host the components as needed. If you're looking for a developer-first alternative to closed auth platforms, SuperTokens is worth a serious look.