* [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.

* [FerrisKey v0.9.0](https://github.com/ferriskey/ferriskey) – High-performance IAM solution optimized for cloud-native environments with a Rust API and React-based web interface.

* [Nango v0.71.12](https://github.com/NangoHQ/nango) – Complete infrastructure for building product integrations: API auth, request proxying, data syncing, webhooks, and observability for 500+ APIs.

* [Better Auth v1.7.7](https://github.com/better-auth/better-auth) – Framework-agnostic authentication and authorization library for TypeScript with a plugin ecosystem for advanced features.

* [@curveball/a12n-server v0.32.0](https://github.com/curveball/a12n-server) – Lightweight authentication server implementing OAuth2 and OpenID Connect standards.

* [OpenPubkey v0.29.0](https://github.com/openpubkey/openpubkey) – Protocol leveraging OpenID Providers to bind identities to public keys through verifiable tokens.

* [OAuth2c v1.21.0](https://github.com/SecureAuthCorp/oauth2c) – Command-line tool to fetch OAuth 2.0 access tokens across many grant types and client authentication methods.

* [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.

* [GoAuth v0.25.0](https://github.com/grokify/goauth) – Go library for OAuth 2.0, JWT, TLS client and Basic authentication with a unified JSON configuration.

* [@axa-fr/oidc-client v7.29.6](https://github.com/AxaFrance/oidc-client) – Lightweight and secure library for managing authentication with OpenID Connect and OAuth2 protocols.

* [Heimdall v0.17.23](https://github.com/dadrus/heimdall) – Cloud-native identity-aware proxy and access-control decision service.