Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Myki Authenticator - Login to any account on any device with your fingerprint
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
YubiKey - The YubiKey is a one-time password device for secure login with two-factor authentication
FreeOTP Authenticator - FreeOTP Authenticator precisely brings a second, secure layer of security for your online social or private accounts.