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

🔏 A small WebAuthn API wrapper that translates to/from pure JSON using base64url.

Django Authentication Backend For Passkeys

A helper for OpenSSH to interact with FIDO2 and U2F security keys through native Windows Hello API

An Open-Source FIDO U2F implementation on nRF52 SoC

Test tool for CTAP2 authenticators

🗝️ Background program that skips the phone option and chooses the USB security key in Windows credential prompts.

This is for setting up a Yubico Passwordless Ubuntu Login or Logins

TurtlPass Firmware for Raspberry Pi Pico (RP2040)

Deploys KMS Autokey resource to simplify creation and management of customer encryption keys (CMEK) by automating provisioning and assignment.

My list of congrats and call-outs for services supporting (or not) security keys

A smartcard keyboard firmware, based on Nitrokey Pro

Small package mapping AAGUID (security key identifiers) to their respective metadata from the FIDO's Metadata Service (MDS).

Agama Project to authenticate people using USB FIDO2 security keys

GnuPG wrapper script for symmetric encryption with YubiKey (challenge-response). Includes an adapter for QtPass and Browserpass (passwordstore).