A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP…

Open source smart card tools and middleware. PKCS#11/MiniDriver/Tokend

A Simple library for communicating with USB and Bluetooth HID devices on Linux, Mac, and Windows.

A C library for asynchronous DNS requests

OpenSSL based Authenticode signing for PE/MSI/Java CAB files

Heimdal

PKCS#11 wrapper library

Slack module for libpurple

pcsc-lite: PC/SC implementation

CCID driver

X.509 certificate linter

Full disk encryption with Yubikey (Yubico key)

C library + command-line for Open- / GlobalPlatform smart cards

YubiPAM is a module for PAM that provides support for One Time Passwords (OTP) authentication.

udev helper and rule to identify U2F tokens

A small tool for brute forcing the access code of a Yubico Yubikey.

Simple policy control server based on the SPOCP protocol