RPi Projects/WiringPi

Introduction
WiringPi is a project initiated by Gordon Henderson with his GPIO C library WiringPi which seeks to bring easy GPIO interaction in a variety of flavours to as many programming languages as possible. Variants in Ruby, Perl and Python are already at various stages of development.

Full source for all WiringPi language specific projects, and the library itself can be found here: https://github.com/WiringPi