DIGIPASS - DIGIPASS offers two-factor authentication solutions for mobile applications.
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
inWebo - inWebo is a SaaS provider of Identity Protection & two-factor Authentication built to secure access to VPN, web sites, Mobile and Cloud Apps.
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.