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The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

ZITADEL is an open-source identity and access management platform built for teams that need more than basic auth.

Teleport provides connectivity, authentication, access controls and audit for infrastructure.

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

An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP, OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, Google Workspace, Azure AD

Welcome to the home of the Central Authentication Service project, more commonly referred to as CAS.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Spug is a lightweight agent-free automatic operation and maintenance platform designed for small and medium-sized enterprises.