MFAuth is a free, secure and completely offline application that offers 2-step verification for managing your online accounts and services, thus helping to protect your accounts from hackers.



YubiKey is described as 'A multi-protocol, highest assurance security key offering passwordless workflows and strongest 2FA against phishing, protecting devices efficiently' and is a Authenticator in the security & privacy category. There are more than 25 alternatives to YubiKey for a variety of platforms, including Android, iPhone, iPad, Linux and Mac apps. The best YubiKey alternative is Nitrokey. It's not free, so if you're looking for a free alternative, you could try 2FA Authenticator (2FAS) or Authy. Other great apps like YubiKey are OnlyKey, andOTP, OVault and Microsoft Authenticator.
MFAuth is a free, secure and completely offline application that offers 2-step verification for managing your online accounts and services, thus helping to protect your accounts from hackers.



TOTP Authenticator makes it simple and easy to enable 2-factor authentication on your accounts. The app provides option to backup data offline or on the cloud. Features like Push to Chrome, dark theme, custom icons and widgets make the app stand out.





Most users think TOTP Authenticator is a great YubiKey alternative.
This is not a hardware key, so it can't be compared to YubiKey.