Allthenticator is described as 'Unifies digital and physical access with one smartphone-based identity. Users log in to systems and unlock doors via proximity. Supports SSH keys, passkeys, OTP, and peer-based recovery—all managed from a single admin dashboard' and is a Authenticator in the security & privacy category. There are more than 10 alternatives to Allthenticator for a variety of platforms, including Android, iPhone, Android Tablet, iPad and Linux apps. The best Allthenticator alternative is 2FA Authenticator (2FAS), which is both free and Open Source. Other great apps like Allthenticator are Authy, andOTP, FreeOTP and Stratum.