Looking to automate your home with X10 but you have an aversion to Microsoft? Well you can still use X10 with the Xtension software for Mac created by Sand Hill Engineering. According to Sand Hill Engineering 's website:

XTension is the first commercial application for the Macintosh that is explicitly written for automation and security. Written in simple 'C' and Real Basic it is very efficient and quick.

By utilizing AppleScript as its intrinsic scripting language, XTension provides a database and AppleScript compliant verbs which bring a fantastic array of features to home and office automation. XTension is fully scriptable, attachable, and recordable.

Scripts written in AppleScript are attached to any unit and are executed in response to X-10 ON of OFF signals received, or as timed events. Scripts may be as simple or as complex as you wish.

More about Xtension at Sand Hill Engineering