A GlobalProtect VPN client for Linux, written in Rust, based on OpenConnect and Tauri, supports SSO with MFA, Yubikey, and client certificate authentication, etc.

multiOTP open source strong two factor authentication PHP library, OATH certified, with TOTP, HOTP, Mobile-OTP, YubiKey, SMS, QRcode provisioning, etc.

multiOTP Credential Provider is a V2 Credential Provider for Windows 7/8/8.1/10/2012(R2)/2016 with options like RDP only and UPN name support

PHP class to authenticate YubiKeys locally (Yubico OTP algorithm), without any dependency (no PEAR, no PECL, no cURL)

Unofficial Elixir client for the classic Yubikey OTP protocol

WebAuthn in Cloudflare Workers, support Yubico

PHP class to authenticate YubiKeys on YubiCloud, without any dependency (no PEAR, no PECL, no cURL)

Yubico dart library for Dart/Flutter

rofi based frontend for OTP related functionality of yubikey-manager running on Qubes OS

🔑 2FA Implementation Antares Component with Google and Yubikey authenticators

An offline Client for Yubico OTP

Yubikey TOTP

A C# port of the Yubico OATH protocol and CCID driver and a Logitech LCD applet for Yubico Authenticator.