* [Goiabada v1.7.0](https://github.com/leodip/goiabada) – OAuth2 and OpenID Connect server in Go providing self-hosted authentication, SSO, 2FA, and fine-grained authorization.

* [OpenID Connect SDK (client and server) for Go v3.51.14](https://github.com/zitadel/oidc) – OpenID Connect client and server library for Go, certified by the OpenID Foundation.

* [InsForge v2.3.3](https://github.com/InsForge/InsForge) – Agent-native platform enabling AI agents to autonomously build and manage full-stack applications with backend features.

* [auth v1.27.1](https://github.com/go-pkgz/auth) – OAuth2 and direct credential authentication with email and Telegram verification, JWT-in-cookie sessions, avatar support, and middleware.

* [openvpn-auth-oauth2 v2.2.3](https://github.com/jkroepke/openvpn-auth-oauth2) – OpenVPN management client that enables OIDC-based single sign-on across multiple providers.