there are free alternatives, that have varying levels of capabilities and zero support. they are specified in the stickies.

if a one-time $20 hit is too much, multi-boxing might not be for you. wow accounts are $15/month... running 5 would be $75/mon or $900/yr.

btw, $20 is about the price of a single keyboard... imagine if you had to do it the 'old fashioned' way... all hardware
Suvega & Vyndree's Setup (5boxing x 2)