单点登录（SSO）
Single sign-on (SSO) is an authentication scheme that allows a user to log in with a single ID to any of several related, yet independent, software systems. SSO supporters place emphasis on it reducing the risk of password fatigue and improvement of usability in terms of perceived corperate identity between different services of the same provider.
Conversely, single sign-off or single log-out (SLO) is the property whereby a single action of signing out terminates access to multiple software systems.
Tailscale 是一个VPN服务，可让您在世界任何地方安全、轻松地访问您拥有的设备和应用程序，使用开源 WireGuard 协议启用加密的点对点连接
一个支持如ACL, RBAC, ABAC等访问模型，可用于Golang, Java, C/C++, Node.js, Javascript, PHP, Laravel, Python, .NET (C#), Delphi, Rust, Ruby, Lua (OpenResty), Dart (Flutter)和Elixir的授权库。
authentik 是一个 Python开发的 IdP (身份提供商) 和 SSO (单点登录) 系统
一个轻量级 Java 权限认证框架，让鉴权变得简单、优雅！—— 登录认证、权限认证、分布式Session会话、微服务网关鉴权、单点登录、OAuth2.0
The only web-scale, fully customizable OpenID Certified™ OpenID Connect and OAuth2 Provider in the world. Become an OpenID Connect and OAuth2 Provider over night. Written in Go, cloud native, headless...
Identity-Aware Tunneled Reverse Proxy Server with Dashboard UI
支持 OAuth 2.0、OIDC 和 SAML 的 UI 优先集中式身份验证/单点登录 (SSO) 平台，与 Casbin RBAC 和 ABAC 权限管理集成
A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.
ZITADEL - Identity infrastructure, simplified for you.
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
Logto 帮助你在数分钟内构建登录注册体验和用户身份体系的开源项目。在安全、优雅、灵活、高效的同时，为你的用户提供愉悦的登录体验。
Privacy-first authentication and user management for B2C and B2B. Open source alternative to Auth0, Cognito, Clerk, Descope, Stytch.
The simplest way to protect your apps with a login screen.
☁️ The Most Secure and Easy Selfhosted Home Server. Take control of your data and privacy without sacrificing security and stability (Authentication, anti-DDOS, anti-bot)
#安全#🧰 A zero trust swiss army knife for working with X509, OAuth, JWT, OATH OTP, etc.
Easy integration with OAuth 2.0 service providers.
Poor man's ngrok - a multi-tenant HTTP/TCP reverse tunnel solution through SSH remote port forwarding
🌱 一款现代化的脚手架项目
an SSO and OAuth / OIDC login solution for Nginx using the auth_request module