Duo mobile is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is Proton Authenticator, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Duo mobile and 11 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Duo mobile are Authenticator Extension, OnlyKey, 2FAGuard and Protectimus.
Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.
Authenticator generates two-factor authentication (2FA) codes in your browser. Use it to add an extra layer of security to your online accounts.
OnlyKey is an open source alternative to YubiKey. OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
Encrypted Windows app for managing 2FA codes with AEGIS-256 and Argon2id, supporting Windows Hello, portable use, multilingual interface, token import/export, QR code/manual entry, generic TOTP, local storage, and dark mode interface for enhanced security.
Protectimus Solutions provides a powerful multi-factor authentication service. We offer 2FA SaaS platform and on-premise version of the product which supports a great variety of TOTP tokens and program tokens for OTP delivery.
Allthenticator unifies digital and physical access with one smartphone-based identity. Users log in to systems and unlock doors via proximity. Supports SSH keys, passkeys, OTP, and peer-based recovery—all managed from a single admin dashboard.
Clockode is a minimal, and offline-only TOTP code generator that stores your authentication secrets in an encrypted local vault, keeping your two-factor codes private and accessible without needing an internet connection.
CryptoPhoto gives you a fast and safe way to log into your favorite participating web sites while enjoying leading-edge protection against phishing, malware attacks, and scamming.
Authman helps you manage your 2-step authentication tokens on iOS, Android and desktop, and securely sync them between devices.
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