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11 Best Open Source WorkOS Alternatives

A curated collection of the 11 best open source and self-hosted alternatives to WorkOS in 2026.

Looking for a free, privacy-friendly, or self-hosted replacement for WorkOS 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 WorkOS alternatives include Keycloak, Better Auth and Authentik.

9,015

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.

Hanko preview

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.

36,444

Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.

Keycloak preview

Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.

29,713

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

Better Auth preview

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

25,186

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

Authentik preview

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

14,870

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

Zitadel preview

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

15,285

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

SuperTokens preview

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

13,849

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

Ory preview

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

6,841

Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.

Hexclave preview

Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.

5,940

Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

Permify preview

Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

4,558

A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.

Cerbos preview

A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.

2,011

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 preview

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 WorkOS

An API platform for quickly adding common enterprise features like SSO to your app, without building them from scratch.