There’s an interesting new combo of apps out called Otto’s Antenna and Otto’s Remote (Official Site). Otto’s Antenna sits in the menu bar of your Mac and you give it AppleScripts, shell scripts and Automator workflows to manage. That’s all. Otto’s Remote, on your iPhone, can remotely trigger any scripts in Otto’s Antenna’s scripts folder. Anywhere. You don’t have to be in range of Bluetooth or Wi-Fi. It works over iCloud (and surprisingly well). That’s nifty, but even niftier is that Otto’s Remote using geofencing to trigger scripts automatically. You can set these up with multiple Macs, with any script that Otto’s Antenna knows about, and can be set up to fire when you enter or leave a location.