multi-factor-authentication

SuperTokens

SuperTokensOpen

Open-source user authentication with self-hosting and managed cloud

SuperTokens is open-source user authentication with session management, passwordless and social login, and SSO, available self-hosted or as a managed service.

Authgear

AuthgearOpen

Open source auth with SSO, passkeys, and user management

Authgear is an open source identity platform with login flows, single sign-on, multi-factor authentication, and user management for web and mobile apps.