Open Source realtime backend in 1 file

Authentication for the Web.

The most comprehensive authentication framework for TypeScript

Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.

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

Flexible authentication solution for Rails with Warden.

Simple, unobtrusive authentication for Node.js.

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.

Daemon to ban hosts that cause multiple authentication errors

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Standalone man-in-the-middle attack framework used for phishing login credentials along with session cookies, allowing for the bypass of 2-factor authentication

A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.

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.

Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

ZITADEL - Identity infrastructure, simplified for you.

An open-source AI-first Identity and Access Management (IAM) /AI 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

Deduplicating archiver with compression and authenticated encryption.

Google's officially supported Node.js client library for accessing Google APIs. Support for authorization and authentication with OAuth 2.0, API Keys and JWT (Service Tokens) is included.

🧑‍🚀 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.

Authentication, simple and clean

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/

Enable Opencode to authenticate against Antigravity (Google's IDE) via OAuth so you can use Antigravity rate limits and access models like gemini-3-pro and claude-opus-4-5-thinking with your Google credentials.

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.