SuperTokens
Open-source authentication for modern apps
Founded
2019
Starting Price
0
Category
Security & IT
Last updated March 12, 2026
About SuperTokens
SuperTokens is a Y-Combinator-backed open-source authentication platform that serves as an alternative to Auth0, Firebase Auth, and AWS Cognito. It provides email/password login, passwordless authentication, social OAuth 2.0, multi-factor authentication, session management, and role-based access control with full data ownership and no vendor lock-in.
Pros & Cons
Pros
- Fully open-source with self-hosted option, ensuring no vendor lock-in and complete data ownership
- Strong session security with built-in protection against XSS, CSRF, session fixation, and automatic theft detection
- Quick implementation — developers can integrate authentication in under a day using official SDKs
- Generous free tier with unlimited users on self-hosted and 5K MAUs on managed cloud
- Modular architecture lets you enable only the auth features you need and deeply customize UI and backend logic
Key Features
Email & Password Authentication
Built-in email/password login with secure password hashing, account verification, and password reset flows
Passwordless Authentication
Support for magic link and OTP-based passwordless login via email or phone number
Social & OAuth 2.0 Login
Pre-built integrations with Google, GitHub, Apple, Facebook, and other OAuth 2.0 providers
Multi-Factor Authentication
Add TOTP-based MFA to any login flow for an extra layer of account security
Session Management
Advanced session handling with built-in protection against XSS, CSRF, and session fixation attacks, plus automatic session theft detection
Role-Based Access Control
Define roles and permissions to control what authenticated users can access across your application
User Management Dashboard
Admin dashboard for viewing, searching, and managing users, sessions, and metadata without writing custom tooling
Pricing
Self-Hosted (Open Source)
0/month
- Unlimited monthly active users
- All core authentication features
- Email/password & passwordless login
- Social OAuth 2.0 login
- Session management
Best For
SaaS Application Authentication
Add secure multi-tenant authentication to B2B SaaS products with per-tenant login configurations and user isolation
Privacy-First Self-Hosted Auth
Deploy authentication on your own infrastructure for full data sovereignty, ideal for regulated industries like healthcare or finance
Startup MVP Authentication
Get production-ready auth running quickly with free pricing, allowing startups to focus on core product development instead of building login systems
Migrating from Auth0 or Firebase
Replace expensive managed auth providers with an open-source alternative that offers comparable features at a fraction of the cost
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