Open source sso projects
Every project in the registry tagged sso, ranked by real GitHub adoption.
Zero-config VPN with WireGuard for secure networking
Framework-agnostic authentication for TypeScript applications
✨ 开源、免费、一站式 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、SSO 单点登录、OAuth2.0 统一认证、jwt 集成、API Key 秘钥授权、API 参数签名
A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.
The tiniest OpenID Certified™ authorization and authentication server you have ever seen.
Self-hosted cloud platform with automated security
Easy integration with OAuth 2.0 service providers.
an SSO and OAuth / OIDC login solution for Nginx using the auth_request module
Single Sign-On for Your Self-Hosted Universe
SpringBoot single sign-on authentication and authorization, implemented with OAuth 2.0, supporting cross-domain and distributed deployment.
A distributed single-sign-on framework.（单点登录框架XXL-SSO）
OpenID Certified™ OpenID Connect and FAPI 2 Relying Party module for Apache HTTPd
🗂️ FileRise – lightweight, self-hosted file manager & storage hub with granular ACLs, resumable uploads, encrypted folders, WebDAV & SSO. Fully Docker / Unraid
Welcome to the WSO2 Identity Server source code! For info on working with the WSO2 Identity Server repository and contributing code, click the link below.
Apereo PHP CAS Client
The Janssen Project is a home for open source IAM components, featuring Auth Server (OAuth/OpenID), Agama low-code identity orchestration, and the Cedarling pol
openvpn-auth-oauth2 is a plugin/management interface client for OpenVPN server to handle an OIDC based single sign-on (SSO) auth flows
Related tags
Frequently asked questions
How many open source sso projects are there?
This registry tracks 18 projects tagged sso, with 146,518 GitHub stars between them. The most-adopted is Tailscale at 38,534 stars.
Are these sso projects free to use?
Yes — 17 of the 18 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which sso project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these sso projects still maintained?
17 of the 18 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.