LoginTC - Simply Strong Two-Factor Authentication LoginTC is best in class. Effortless Administration. Intuitive User Experience. Cost-effective solution for all organizations.
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
DIGIPASS - DIGIPASS offers two-factor authentication solutions for mobile applications.
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.