Developer website: RUDIS DOT NET
Griswold Server... The Griswold Server component installs on your Mac (Leopard required) and controls an X10 FireCracker module. You can control your holiday displays right from your desktop or use the iPhone Griswold client (either compile from the source provided or check back to griswoldapp.com for when it is posted to the iTunes App Store) to remotely shut down or start up your holiday extravaganza from anywhere in the world.
Mac OS X 10.5 or later, X10 FireCracker Interface, USB-to-serial adapter (for interfacing with the FireCracker).