google / OpenSK

OpenSK is an open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.

privacyidea / privacyidea

:closed_lock_with_key: multi factor authentication system (2FA, MFA, OTP, FIDO Server)

TheMaxMur / RS-Key

Turn a $5 Raspberry Pi RP2350 board into an open-source hardware passkey: WebAuthn/FIDO2 logins, ssh & git signing, OpenPGP, PIV, TOTP. Rust firmware, no_std.