A complete implementation of the OpenPGP to encrypt and sign
A portable foreign function interface library
Light-weight cryptographic and SSL/TLS library
A utility for getting files from remote servers (FTP, HTTP, and others)
Advanced IP routing and network device configuration tools
The free peer-reviewed portable C++ source libraries
Extended crypt library for descrypt, md5crypt, bcrypt, and others
Collection of basic system utilities
The userspace command line program of netfilter for packets filtering
The GNU Scientific Library for numerical analysis
IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator