Best Open Source Clerk Alternatives

A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.

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

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

ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.

Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.

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

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

Stack Auth provides secure authentication, authorization, and user management for developers in just 5 minutes.

A managed authentication platform that helps developers implement secure user identity features like SSO, MFA, and social login without complex infrastructure.

Complete B2B authentication solution with SSO, role management, API security, and pre-built UI components. Ship enterprise-grade auth in just a few lines of code.