OnlyKey is a USB security key that works virtually everywhere. Like a swiss army knife of authentication, OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
OnlyKey DUO is a USB security key that works virtually everywhere, supporting both USB-A and USB-C. Say goodbye to remembering passwords! Like a security swiss army knife, use as a password manager, MFA (FIDO2, TOTP, and Yubico® OTP), SSH, OpenPGP, and more.
OnlyKeyOnlyKey is an open source alternative to YubiKey