goauthentik/authentik

Self-hosted identity provider for user authentication, single sign-on, and access control

self-hosted 2FA manager for your accounts
Bubka/2FAuth
open source auth with login, session management, multi-factor, and social login
supertokens/supertokens-core
Open-source tool for single sign-on and identity management
casdoor/casdoor
Open source identity platform for user management and authentication
zitadel/zitadel
open-source SSO and 2FA portal for web apps
authelia/authelia
reverse proxy for authentication using external identity providers
oauth2-proxy/oauth2-proxy
open-source auth platform for web apps
stack-auth/stack-auth
Open source identity and access management with SSO
keycloak/keycloak
auth and user management for apps, open source
authorizerdev/authorizer