* [Logto v1.45.0](https://github.com/logto-io/logto) – Modern auth infrastructure supporting OIDC, OAuth 2.1, multi-tenancy, SSO, and RBAC for SaaS and AI applications.

* [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.