Oauth2 GitHub Repositories (2026) · Open Source Tools

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

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

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

The most comprehensive authentication framework

OpenID Connect authentication provider for Home Assistant

Enterprise-ready MCP Gateway & Registry that centralizes AI development tools with secure OAuth authentication, dynamic tool discovery, and unified access for both autonomous AI agents and AI coding assistants. Transform scattered MCP server chaos into governed, auditable tool access with Keycloak/Entra integration.

Codex CLI multi-account OAuth manager with account switching, health checks, runtime rotation, diagnostics, and recovery tools for @openai/codex

command line management for Google Workspace

Easy to use OpenID Connect client and server library written for Go and certified by the OpenID Foundation

ThunderID, an LF Decentralized Trust project, is a high-performance, open-source identity stack designed for developers to secure and manage access for humans, AI agents, and machines through fully composable identity flows.

OpenCode plugin for ChatGPT Plus/Pro OAuth with Codex/GPT-5 routing, multi-account rotation, account switching, health checks, diagnostics, and recovery tools

A free open source OpenID Connect and OAuth 2.0 framework for ASP.NET Core, based on IdentityServer4

🔐 Authentication, Authorization, and Accounting (AAA) App and Plugin for Caddy v2. 💎 Implements Form-Based, Basic, Local, LDAP, OpenID Connect, OAuth 2.0 (Github, Google, Facebook, Okta, etc.), SAML Authentication. MFA/2FA with App Authenticators and Yubico. 💎 Authorization with JWT/PASETO tokens. 🔐

Sync your Outlook and Google calendars

API Gateway bridging modern and legacy APIs with WSDL-to-OpenAPI, SOAP-to-REST, XML, OAuth2, and GraphQL.

Open source Auth0/Keycloak alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps

A boilerplate for Node.js web applications

Twitch VOD and Live Stream archiving platform. Includes a rendered and real-time chat for each archive.

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

Highflame ZeroID: Autonomous Agent Identity Management System (AAIMS)