ZITADEL - Identity infrastructure, simplified for you.

• UpdatedFeb 7, 2026
• Go

Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.

• UpdatedFeb 5, 2026
• Go

OpenSK is an open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.

• UpdatedJan 14, 2026
• Rust

Solo 1 firmware in C

• UpdatedNov 13, 2022
• C

Directory Services Internals (DSInternals) PowerShell Module and Framework

• UpdatedFeb 7, 2026
• C#

🔐 A curated list of awesome WebAuthn and Passkey resources

• UpdatedJan 15, 2026

🔐 multi factor authentication system (2FA, MFA, OTP, FIDO Server)

• UpdatedFeb 7, 2026
• Python

Passkeys, FIDO2 and WebAuhtn .NET library.

• UpdatedDec 11, 2025
• C#

FIDO2 Conformant WebAuthn and Passkey backend library for golang

• UpdatedFeb 6, 2026
• Go

Python library and command line tool for configuring any YubiKey over all USB interfaces.

• UpdatedFeb 4, 2026
• Python

WebAuthn (FIDO2) server library written in Go

• UpdatedDec 5, 2022
• Go

Pythonic WebAuthn 🐍

• UpdatedSep 30, 2025
• Python

FIDO Passkey for Raspberry Pico and ESP32

• UpdatedFeb 5, 2026
• C

Single Sign-On Identity & Access Management via OpenID Connect, OAuth 2.0 and PAM

• UpdatedFeb 7, 2026
• Rust

🔏 A small WebAuthn API wrapper that translates to/from pure JSON using base64url.

• UpdatedAug 25, 2025
• TypeScript

WebAuthn ruby server library ― Make your Ruby/Rails web server become a conformant WebAuthn Relying Party

• UpdatedJan 15, 2026
• Ruby

Provides library functionality for FIDO2, including communication with a device over USB or NFC.

• UpdatedJan 28, 2026
• C

Pluggable Authentication Module (PAM) for U2F and FIDO2

• UpdatedMar 27, 2025
• C

FIDO2(WebAuthn) server officially certified by FIDO Alliance and Relying Party examples.

• UpdatedFeb 2, 2026
• Java

A simple PHP WebAuthn (FIDO2/Passkey) server library

• UpdatedSep 5, 2025
• PHP