Open Authenticator by Skyost is described as 'Secure your online accounts with Open Authenticator : a free, open-source and lovely-crafted TOTP (Time-Based One-Time Password) manager' and is a Authenticator in the security & privacy category. There are more than 25 alternatives to Open Authenticator by Skyost for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Linux apps. The best Open Authenticator by Skyost alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like Open Authenticator by Skyost are Proton Authenticator, Ente Auth, Bitwarden Authenticator and 2FA Authenticator (2FAS).