Overview

SuperTokens is an open-source authentication platform designed to provide developers with capabilities for managing user sign-up, sign-in, and session management. The platform offers both a self-hosted Community Edition and a managed Cloud service, allowing organizations to choose based on their control and infrastructure requirements. The core products, SuperTokens Self-hosted and SuperTokens Cloud, cater to different operational preferences while maintaining a consistent API and feature set.

The system is built to offer flexibility in authentication flows, supporting traditional email-password, social logins, and passwordless options. This flexibility is supported by a range of SDKs for common backend frameworks like Node.js, Python, Go, and Java, as well as frontend libraries such as React, Angular, Vue.js, React Native, and Flutter. This broad SDK support aims to streamline integration across different technology stacks, as detailed in the SuperTokens developer guides.

SuperTokens is positioned for development teams that prioritize data ownership and customization over fully managed, black-box solutions. The self-hosted option, in particular, enables developers to maintain user data within their own infrastructure, addressing concerns around data residency and compliance. This approach contrasts with some fully managed identity providers, where user data is controlled by the vendor. Organizations seeking to manage their authentication infrastructure while leveraging open-source components may consider SuperTokens for its balance of control and pre-built functionality.

The platform's design emphasizes developer experience, offering detailed documentation and API references to facilitate integration and customization. For instance, the SuperTokens API reference provides endpoints for managing users, sessions, and authentication methods. This level of documentation is intended to support developers in implementing complex authentication logic and integrating with existing systems. The emphasis on open-source availability and self-hosting options aligns with principles of vendor independence and architectural flexibility, a concept often discussed in the context of enterprise architecture by organizations like Martin Fowler's observations on open source alternatives.

Key features

  • Self-hosted Community Edition: Provides full control over authentication infrastructure and user data, suitable for organizations with specific compliance or data residency requirements.
  • Managed Cloud Service: Offers a hosted solution for authentication, reducing operational overhead while maintaining feature parity with the self-hosted version.
  • Flexible Authentication Methods: Supports various sign-in options including email-password, social logins (Google, GitHub, Apple), and passwordless methods like email or phone number verification.
  • Session Management: Includes features for secure session handling, refresh token rotation, and session invalidation.
  • Multi-factor Authentication (MFA): Allows for adding an extra layer of security with MFA capabilities.
  • User Data Control: Designed to give developers direct control over user data and its storage, particularly with the self-hosted option.
  • Extensible SDKs: Provides SDKs for Node.js, Python, Go, Java, React, React Native, Flutter, Angular, and Vue.js, enabling integration across diverse tech stacks.
  • Compliance Focus: Built with considerations for regulations such as GDPR and SOC 2 Type II, assisting organizations in meeting their compliance obligations.

Pricing

SuperTokens offers a Community Edition that is free for self-hosting. Cloud plans are structured based on Monthly Active Users (MAUs), with specific features tied to different tiers.

Plan Description Price (as of 2026-05-02) Key Features
Community Edition Self-hosted, open-source version. Free Basic authentication flows, core SuperTokens features, full data control.
Growth (Cloud) Managed cloud service for growing applications. Starts at $99 per month (up to 10,000 MAUs) All Community features, managed infrastructure, higher rate limits, email support.
Enterprise (Cloud) Custom solutions for large organizations with specific needs. Contact sales Advanced security features, dedicated support, custom SLAs, private cloud deployment options.

Further details on pricing tiers and feature comparisons are available on the SuperTokens pricing page.

Common integrations

Alternatives

  • Auth0: A widely used identity platform offering authentication, authorization, and user management as a service.
  • Clerk: Focuses on developer-first authentication and user management for React, Next.js, and other modern web applications.
  • Firebase Authentication: A Google-backed service providing backend authentication services for mobile and web applications, integrated with the broader Firebase ecosystem.

Getting started

To get started with SuperTokens using the Node.js SDK for an Express.js application, you would typically set up the SuperTokens core service, then integrate the SDK into your backend and frontend. The following example illustrates a basic server-side setup for email-password authentication:

// server.js
const express = require('express');
const supertokens = require('supertokens-node');
const Session = require('supertokens-node/recipe/session');
const EmailPassword = require('supertokens-node/recipe/emailpassword');
const { middleware, errorHandler } = require('supertokens-node/framework/express');
const cors = require('cors');

supertokens.init({
    framework: "express",
    supertokens: {
        connectionURI: "YOUR_SUPERTOKENS_CORE_URI", // e.g., "http://localhost:3567"
    },
    appInfo: {
        appName: "My SuperTokens App",
        apiDomain: "http://localhost:3001",
        websiteDomain: "http://localhost:3000",
        apiBasePath: "/auth",
        websiteBasePath: "/auth",
    },
    recipeList: [
        EmailPassword.init(),
        Session.init()
    ]
});

const app = express();

app.use(cors({
    origin: "http://localhost:3000", // Your frontend domain
    credentials: true,
}));

app.use(middleware());

// Your API routes here
app.get('/api/data', Session.verifySession(), async (req, res) => {
    // Access user session data via req.session
    res.json({ message: `Hello user ${req.session.getUserId()}` });
});

app.use(errorHandler());

app.listen(3001, () => {
    console.log('Backend running on http://localhost:3001');
});

This Node.js example initializes SuperTokens with the EmailPassword and Session recipes. It configures the connection to the SuperTokens core service and defines the application's domains. The Session.verifySession() middleware protects an example API route, ensuring only authenticated users can access it. On the frontend, you would integrate a corresponding SuperTokens SDK to handle user sign-up, sign-in, and session management, interacting with these backend endpoints. For complete setup instructions, including frontend integration and database configuration, refer to the SuperTokens getting started guides.