Auth0

Keycloak

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

SuperTokens

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

Zitadel

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

Authelia

The Single Sign-On Multi-Factor portal for web apps. 18.1k

Logto

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

Hanko

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

Authentik

Open-source Identity Provider with flexibility.

Ory

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

Cerbos

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

Authgear

Authgear is an open-source Auth0/Clerk alternative for all of your consumer authentication needs. Get started in 5 minutes to integrate passwordless login‚ passkeys‚ 2FA‚ and enterprise-grade security into your applications. It supports modern authentication protocols OIDC and SAML. It features a web portal for user management and setting up authentication/authorization configurations.

Oso

Oso offers scalable, flexible authorization for modern applications.

Better Auth

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

Stack Auth

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

Permify

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

Jackson

an SSO service supporting SAML and OpenID Connect protocols. Single Sign-On; Directory Sync via the SCIM 2.0 protocol for automatic user/group provisioning/de-provisioning. 🤩

Tesseral

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.

Fief

Open-source user authentication management.

Janssen