Top AUTHN GitHub Repositories & Tools (2026)

Single Sign-On Identity & Access Management via OpenID Connect, OAuth 2, PAM

🔐 Authentication, Authorization, and Accounting (AAA) App and Plugin for Caddy v2. 💎 Implements Form-Based, Basic, Local, LDAP, OpenID Connect, OAuth 2.0 (Github, Google, Facebook, Okta, etc.), SAML Authentication. MFA/2FA with App Authenticators and Yubico. 💎 Authorization with JWT/PASETO tokens. 🔐

Passkeys, FIDO2 and WebAuthn .NET library.

JWT-to-RBAC lets you automatically generate RBAC resources based on JWT tokens

Experiment with Go + HTMX and OAuth2/OIDC + WebAuthn

FIDO2 Conformant WebAuthn and Passkey backend library for golang