Krypton is described as 'implements the standardized FIDO Universal 2nd Factor (U2F) protocol to provide secure, un-phishable two-factor authentication on the web, using just your phone' and is an app in the Security & Privacy category. There are more than 10 alternatives to Krypton for a variety of platforms, including Android, Android Tablet, iPad, iPhone and Windows. The best alternative is Authy, which is free. Other great apps like Krypton are andOTP (Free, Open Source), Google Authenticator (Free), YubiKey (Paid) and SoloKeys (Paid, Open Source).
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.
VoiceProtect protects against password compromises, SIM swaps, and other two-factor authentication (“2FA”) vulnerabilities. It’s the first voice authentication solution for consumers and SMBs, where voice biometrics serves as a third factor.
Zoho OneAuth, a free multi-factor authentication app, adds a firm layer of security to your account to protect it from password breaches.Enables single sign-on and works even when your device goes offline.