casdoor / casdoor

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

authelia / authelia

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

greenpau / caddy-security

🔐 Authentication, Authorization, and Accounting (AAA) App and Plugin for Caddy v2. 💎 Implements Form-Based, Basic, Local, LDAP, OpenID Connect, OAuth 2.0 (Github, Google, Facebook, Okta, etc.), SAML Authentication. MFA/2FA with App Authenticators and Yubico. 💎 Authorization with JWT/PASETO tokens. 🔐

authgear / authgear-server

Open source Auth0/Keycloak alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps

go-webauthn / webauthn

FIDO2 Conformant WebAuthn and Passkey backend library for golang

teamhanko / hanko

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