authelia/authelia

open-source SSO and 2FA portal for web apps

self-hosted 2FA manager for your accounts
Bubka/2FAuth
open-source auth platform for web apps
stack-auth/stack-auth
open source auth with login, session management, multi-factor, and social login
supertokens/supertokens-core
simple login and OAuth for homelab apps
steveiliop56/tinyauth
Open source identity platform for user management and authentication
zitadel/zitadel
Open source auth infrastructure for B2B software
tesseral-labs/tesseral
Open-source OAuth provider for web and mobile apps
openauthjs/openauth
auth and user management for apps, open source
authorizerdev/authorizer
red team tool for OAuth consent phishing and token abuse on Microsoft 365
praetorian-inc/oauthseeker
Run and watch your own MCP servers locally with OAuth2 and a live dashboard
stephenlacy/mathom