Yandex.Key
Two-factor authentication app for Yandex accounts and also other QR-code based 2FA
18 Alternatives To Yandex.Key
Authenticator
Authenticator is a simple, free, and open source two-factor authentication app.
Authenticator Plus
Authenticator Plus generates 2-step verification codes and lets you synchronize 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.
Duo Security
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.
FreeOTP
Open source implementation of the two-factor authentication HOTP and TOTP schemes.
Google Titan
A 2FA device to protect yourself from hackers
LifeLock
LifeLock is an identity theft protection solution that protects its members’ personal information from being used by a third party.
Nitrokey
Email Encryption. Encrypt your emails with GnuPG, OpenPGP, S/MIME or your favourite email client.
OTP Auth
The app for calculating one-time-passwords on iPhone and iPad.
OTPClient
GTK+ application for securely managing TOTP & HOTP tokens.
Obsidian - Elegant OTP Authenticator
Obsidian is an elegant OTP Authenticator app for both iOS and MacOS.
Open Authenticator
A trusted open-source Authenticator. Formerly known as SmartWatch2 Authenticator free.
SoloKeys
Secure login made open and easy í ½í´
TeleSign
TeleSign offers end-to-end communications Platform as a Service.
Twilio
Brings voice and messaging to your web and mobile applications.
UNLOQ
UNLOQ offers Multi-Factor Authentication, Transaction authorization, and Data Encryption solutions for Businesses and Organisations.
YubiKey
The YubiKey is a one-time password device for secure login with two-factor authentication
andOTP
andOTP is a two-factor authentication App for Android 4.4+