Authelia

Open-source authentication and authorization server providing two-factor authentication (2FA) and single sign-on (SSO) for web applications via a web portal. OpenID Connect 1.0 Certified with support for OAuth2/OIDC, LDAP integrations, TOTP, WebAuthn/Passkeys, and push notifications. Designed as a companion for reverse proxies like nginx, Traefik, and Caddy.