authelia
The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™
logto-io
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
tinyauthapp
The tiniest authentication and authorization server you have ever seen.
hectorm
One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers.