mfa

The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™

ZITADEL - Identity infrastructure, simplified for you.

An open-source AI-first Identity and Access Management (IAM) /AI MCP gateway and auth server with web UI supporting MCP, A2A, OAuth 2.1, OID

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.