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

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

Yubikey client API library, Challenge-Response & Configuration

This is for setting up a Yubico Passwordless Ubuntu Login or Logins

Alfred workflow for obtaining TOTP codes from a YubiKey

YubiKey provisioning tool used by defguard security platform

Unofficial Elixir client for the classic Yubikey OTP protocol

Runs a command on receipt of a valid yubikey OTP

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

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

PHP 7/8-friendly alternative to the official php-yubico client

A collection of classes to provide second factor authentication like Yubico OTP (Yubikey), Oath (TOTP, HOTP, GoogleAuthenticator) server-side written in PHP.

Yubico dart library for Dart/Flutter

AD FS Multi-Factor Authentication Provider using Yubico OTP

Go implementation of yubikey-val

WordPress plugin to enable Yubico OTP authentication

A tool to invalidate accidental Yubikey presses

C# Library for managing authentication and encryption

modhex encoding/decoding used by Yubico-OTP Authentication

PHP function for Yubico OTP