GAuth Authenticator is described as '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' and is a Authenticator in the security & privacy category. There are more than 50 alternatives to GAuth Authenticator for a variety of platforms, including Android, iPhone, Android Tablet, iPad and Windows apps. The best GAuth Authenticator alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like GAuth Authenticator are Proton Authenticator, Keepass2Android, 2FA Authenticator (2FAS) and Authy.