The U2F Garden

OnlyKey

OnlyKey is manufactured in the United States and is unusual in the FIDO key world for putting six physical buttons on the device. The buttons are used for on device PIN entry, which means the PIN does not pass through the host computer at all. The OnlyKey can hold static passwords, generate TOTP and HOTP codes, sign with PGP and SSH keys, and act as a FIDO2 and U2F authenticator. FIDO2 certification was completed relatively recently. The OnlyKey DUO adds a USB-C connector alongside USB-A in a more compact body.

OnlyKey

A United States made hardware key with on device PIN entry, password storage, FIDO2, OpenPGP, SSH, and OTP.
More information
Certified by the FIDO Alliance as conforming to FIDO2 standardsSupports Hashed One-Time-Password generationFeatures a physical PIN pad for authenticationSupports WebAuthn discoverable resident credentials, the building block of passkeysSupports stored, static passwords, usually configured with a vendor-specific applicationSupports Time-based One-Time-Password generationConforms to the U2F Authenticator and WebAuthn standardEnables use of Yubico YubiOTP one-time-passwords

OnlyKey DUO

The OnlyKey in a smaller body with both USB-A and USB-C connectors.
More information
Certified by the FIDO Alliance as conforming to FIDO2 standardsSupports Hashed One-Time-Password generationFeatures a physical PIN pad for authenticationSupports WebAuthn discoverable resident credentials, the building block of passkeysSupports stored, static passwords, usually configured with a vendor-specific applicationSupports Time-based One-Time-Password generationConforms to the U2F Authenticator and WebAuthn standardEnables use of Yubico YubiOTP one-time-passwords