Official web site:, The YubiKey is a hardware authentication device manufactured by Yubico to protect access to computers, networks, and online services that supports one-time passwords, public-key cryptography, and authentication, and the Universal 2nd Factor and FIDO2 protocols developed by the FIDO Alliance. - Guide to using YubiKey for GPG and SSH - Configuration to use gpg smartcards for ssh authentication - About An SSHCA that uses a standard Yubikey to issue new host and user certificates. - A crate for reading, parsing, verifying, and generating OpenSSH certificates and keys - KeePassXC is a cross-platform community-driven port of the Windows application “Keepass Password Safe” - YubiKey challenge-response USB and NFC driver for Android - Password manager app for Android - Use your YubiKey as a consistent password generator