Casdoor is an open-source, AI-first identity and access management (IAM) and MCP gateway authentication server with a web UI. Built in Go (Beego) with a React frontend, Casdoor supports OAuth 2.0, OIDC, SAML 2.0, CAS, LDAP, Kerberos/SPNEGO, WebAuthn / Passkeys, TOTP / MFA, SCIM 2.0 provisioning, social login, multi-tenant organizations, role-based… - View it on GitHub