Best Authentication & Identity GitHub Repositories

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

The most comprehensive authentication framework

The Single Sign-On Multi-Factor portal for web apps. OpenID Certified™ and Post-Quantum Cryptography Ready.

Flexible authentication solution for Rails with Warden.

ZITADEL - Identity infrastructure, simplified for you.

Free implementation of Play Services

An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP, OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA, Face ID, Google Workspace, Azure AD

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

The Open Source Firebase Alternative with GraphQL.

Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.

The tiniest OpenID Certified™ authorization and authentication server you have ever seen.

OmniAuth is a flexible authentication system utilizing Rack middleware.

Firebase SDK for Apple App Development

Light LDAP implementation

An open, sub-millisecond, single-executable Firebase alternative with type-safe APIs, built-in WebAssembly runtime, realtime subscriptions, auth, MCP and admin UI built on Rust, SQLite (PG) & Wasmtime.

Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.

Kanidm: A simple, secure, and fast identity management platform

NestJS boilerplate. Auth, TypeORM, Mongoose, Postgres, MongoDB, Mailing, I18N, Docker.

Tailwind scaffolding for the Laravel framework.