Google Authenticator is described as 'Generates 2-Step Verification codes on your phone' and is a popular Authenticator in the security & privacy category. There are more than 50 alternatives to Google Authenticator for a variety of platforms, including Android, iPhone, iPad, Mac and Android Tablet apps. The best Google Authenticator alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like Google Authenticator are KeePass, Ente Auth, Proton Authenticator and Bitwarden Authenticator.
The app for calculating one-time-passwords on iPhone and iPad. OTP Auth can be used with any service that uses one time passwords. This includes services like Dropbox and GMail with two-step-verfification enabled. OTP Auth is QR code enabled.
Sentinel is an elegant OTP Authenticator app for both iOS and MacOS. It relies only on the Apple's iCloud Keychain to share data across devices.
Etopa is a two-factor-authentication app, which runs as a web server and can be accessed using a web browser or using an Android app. You can use the Etopa.de instance or host your own.
SAASPASS is an Authenticator, Password Manager and a repository for Secure notes. It also secures access to computers such as Macs and Win with two-factor authentication. It can be used for personal use and/or by a company to secure their cloud apps.
Token2 mobile application can be used with Token2 service, or any other TOTP and Mobile-OTP compliant service with additional features such as possibility of PIN code protection for TOTP profiles and QR code based enrollment for Mobile-OTP profiles.
Step Two is a beautiful, modern two-step verification app. Never get locked out of your own accounts. Step Two uses iCloud to securely back up your two-step codes and make them available on all your devices. Security shouldn’t come at the expense of usability.
Daito is a web-based 2FA authenticator for TOTP tokens. It enables you to share 2FA tokens with others to simply protecting shared accounts. No phone needed.
Daito Authenticator is the most popular SaaS alternative to Google Authenticator.
SecKey provides one time passwords to be used with the two factor authentication of Dropbox, Google, Facebook, GitHub, Proton Mail and many more.
MFAuth is a free, secure and completely offline application that offers 2-step verification for managing your online accounts and services, thus helping to protect your accounts from hackers.
A simple application for multi-factor authentication, written in HTML using jQuery Mobile, jsSHA, LocalStorage and Application Cache. It implements the TOTP (Time-Based One-Time Password) algorithm according to RFC6238 and has been tested to work with Google Authenticator...
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