Strongbox is described as 'Securely stores passwords with Touch ID and YubiKey protection. Compatible with KeePass and Password Safe, offers military-grade security' and is a password manager in the security & privacy category. There are more than 100 alternatives to Strongbox for a variety of platforms, including Windows, Android, Mac, iPhone and Linux apps. The best Strongbox alternative is Bitwarden, which is both free and Open Source. Other great apps like Strongbox are KeePassXC, KeePass, Proton Pass and LastPass.