Open Source realtime backend in 1 file

Authentication for the Web.

The most comprehensive authentication framework for TypeScript

The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™

Flexible authentication solution for Rails with Warden.

The authentication glue you need.

Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.

Self-Hosting Guide. Learn all about locally hosting (on premises & private web servers) and managing software applications by yourself or your organization. Including Cloud, LLMs, WireGuard, Automation, Home Assistant, and Networking.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

A 100% free modern JS SaaS boilerplate (React, NodeJS, Prisma). Full-featured: Auth (email, google, github, slack, MS), Email sending, Background jobs, Landing page, Payments (Stripe, Polar.sh), Shadcn UI, S3 file upload. AI-ready with tailored AGENTS.md, skills, and Claude Code plugin. One cmd deploy. Powered by Wasp full-stack framework.

ZITADEL - Identity infrastructure, simplified for you.

An open-source AI-first Identity and Access Management (IAM) /AI MCP gateway and auth server with web UI supporting MCP, A2A, OAuth 2.1, 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.

Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

🔐 JSON Web Token Authentication for Laravel & Lumen

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

Integrated set of Django applications addressing authentication, registration, account management as well as 3rd party (social) account authentication. 🔁 Mirror of https://codeberg.org/allauth/django-allauth/

The Open Source Firebase Alternative with GraphQL.

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

Secure, cross-platform Git credential storage with authentication to GitHub, Azure Repos, and other popular Git hosting services.