KeePassXC
Free and Open-Source password manager multi-platform.
KeePassXC — fork of KeePassX
(itself a cross-platform fork of KeePass).
KeePassXC supports having key files,
YubiKey ( https://yubico.com ) challenge-response for additional security
https://keepassxc.org
https://github.com/keepassxreboot/keepassxc