FreeOTP Alternatives

Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.

Google Authenticator is a multifactor app for mobile devices.

andOTP is a two-factor authentication App for Android 4.4+

Portable open-source Authenticator for Windows

One app to quickly and securely verify your identity online, for all of your accounts.

LastPass is an online password manager and form filler that makes web browsing easier and more secure.

Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...

The YubiKey is a one-time password device for secure login with two-factor authentication

Duo Mobile works with Duo Security's two-factor authentication service to make logins more...

Authenticator is a simple, free, and open source two-factor authentication app.

Duo Security provides cloud-based two-factor authentication. Duo’s technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover.

Authenticator Plus generates 2-step verification codes and lets you synchronize your accounts.