Stable: 
DRC Sim Server is a utility for pairing a computer to a Wii U to emulate a gamepad.
It needs a client for full functionality.
See the wiki for more info.
Installation instructions are available on the wiki.
drc-sim (original) by memahaxx
- The original Python codebase
libdrc documentation by memahaxx
- Gamepad and Wii U software and hardware details
drc-sim-keyboard by justjake
- The readme that got me set up initially
wpa_supplicant modified by memahaxx
drc_sim_c drc-sim rewritten in C++
netifaces Python network interfaces library
pexpect Python process interaction library