9 Best Open Source Clerk Alternatives
A curated collection of the 9 best open source and self-hosted alternatives to Clerk in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Clerk in 2026? The top open-source alternative is Hanko — Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in..
Other highly rated open-source Clerk alternatives include Better Auth, Authentik and Logto.
Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.
Open source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.
A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.
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.
authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.
An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.
An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.
ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.
Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.
Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.
Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.
About Clerk
A tool offering user management for web and mobile applications, providing authentication, authorization, and user profiles.