Top 3 ctap2 open source projects

Opensk
OpenSK is an open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.
CTAP2-test-tool
Test tool for CTAP2 authenticators
uru-card
Arduino based firmware for FIDO2 Authenticator
1-3 of 3 ctap2 projects