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Best Open Source Auth0 Alternatives

Discover the best open source alternatives to Auth0.

The best open source alternative to Auth0 is SuperTokens. If that doesn't suit you, we've compiled a ranked list of other open source Auth0 alternatives to help you find a suitable replacement. Other interesting open source alternatives to Auth0 are: Authentik, Logto and Hanko.

Auth0 alternatives are mainly Auth & SSO Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Auth0.

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An easy-to-implement, adaptable authentication and authorization platform for developers managing identity infrastructure.

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Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.

Screenshot of SuperTokens website

SuperTokens is an open-source authentication solution that provides developers with a powerful, flexible, and secure way to implement user management in their applications. With SuperTokens, you can easily add robust authentication features to your web and mobile apps while maintaining full control over your user data.

Key benefits of SuperTokens include:

  • Self-hosted: Keep your user data on your own servers, ensuring complete data ownership and privacy compliance.
  • Customizable: Tailor the authentication flow and UI to match your brand and specific requirements.
  • Multi-tenancy support: Easily manage multiple apps or organizations within a single instance.
  • Comprehensive features: Includes session management, social logins, passwordless auth, and more out of the box.
  • Language agnostic: Supports various backend languages and frameworks, making it versatile for different tech stacks.
  • Active community: Benefit from continuous improvements, updates, and support from a growing open-source community.
  • Easy integration: Well-documented SDKs and APIs make implementation straightforward for developers.
  • Scalable: Designed to handle high traffic and grow with your application's needs.

By choosing SuperTokens, you're not just getting an authentication solution; you're gaining a flexible, secure, and future-proof foundation for your user management needs. Whether you're building a small project or a large-scale application, SuperTokens provides the tools and flexibility to create a seamless authentication experience for your users.

authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.

Screenshot of Authentik website

authentik is a powerful, open-source identity and access management solution designed to give organizations full control over their authentication and authorization needs. Here's why authentik stands out:

  1. Self-hosted and Open Source:

    • Deploy anywhere, maintaining complete control over your sensitive data
    • Continuously reviewed by community experts, ensuring transparency and security
  2. Flexible and Customizable:

    • Pre-built workflows for quick setup
    • Fully customizable authentication steps through configurable templates
    • Comprehensive APIs for advanced automation
  3. Enterprise-Grade Features:

    • Multi-factor authentication (MFA)
    • Conditional access
    • Application proxy
    • Support for multiple protocols (SAML2, OAuth2, OIDC, SCIM, LDAP, RADIUS)
  4. Scalable and Easy to Deploy:

    • Supports Kubernetes, Terraform, and Docker Compose
    • Designed for both B2B and B2C use cases
  5. Comprehensive Identity Solution:

    • Authentication
    • User enrollment
    • Self-service capabilities
  6. Cost-Effective:

    • Streamlined pricing with no hidden costs
    • Core functionality included without extra charges

authentik empowers organizations to prioritize security, simplify deployment, and automate identity workflows. Whether you're a small business or a large enterprise, authentik provides the tools and flexibility to meet your specific identity and access management needs.

An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.

Screenshot of Logto website

Logto is a powerful, open-source identity platform designed to simplify authentication and user management for modern applications. With its robust features and flexible architecture, Logto enables developers to implement secure, seamless authentication flows while providing an exceptional user experience.

Key benefits of Logto include:

  • Customizable login experiences: Tailor the authentication process to match your brand and user preferences, creating a cohesive and engaging login flow.
  • Multi-tenant support: Easily manage multiple applications and organizations within a single Logto instance, streamlining your identity infrastructure.
  • Comprehensive user management: Gain full control over user data, roles, and permissions with intuitive tools for efficient user administration.
  • Enterprise-grade security: Implement industry-standard security protocols and best practices to protect user identities and sensitive information.
  • Extensible architecture: Integrate Logto seamlessly with your existing tech stack and extend its functionality through a wide range of connectors and APIs.
  • Open-source advantage: Benefit from community-driven development, transparency, and the ability to customize the solution to your specific needs.

Whether you're building a small application or managing a complex ecosystem of services, Logto provides the tools and flexibility to create secure, user-friendly authentication experiences that scale with your business.

Streamline user authentication with passwordless login, enhancing security and user experience for your web applications.

Screenshot of Hanko website

Hanko is a cutting-edge authentication solution designed to revolutionize the way users access web applications. By embracing passwordless technology, Hanko offers a seamless and secure login experience that benefits both developers and end-users alike.

Key benefits of Hanko include:

  • Enhanced Security: Eliminate password-related vulnerabilities and reduce the risk of account breaches.
  • Improved User Experience: Provide a frictionless login process, increasing user satisfaction and retention.
  • Easy Integration: Implement Hanko quickly with pre-built components and comprehensive documentation.
  • Customization Options: Tailor the authentication flow to match your brand and application requirements.
  • Multi-factor Authentication: Strengthen security with additional factors like biometrics or security keys.
  • GDPR Compliance: Ensure user data privacy with built-in compliance features.
  • Open Source Transparency: Benefit from community-driven development and security audits.

Hanko empowers developers to create secure, user-friendly applications without the hassle of managing complex authentication systems. By leveraging modern web standards and best practices, Hanko paves the way for a passwordless future, making online interactions safer and more convenient for everyone.


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