Laptop Alarm. Software emits a piercing alarm if the power cable is unplugged, the laptop is shut-down or the mouse removed. Clearly designed for those times when you’re sitting in a public place (e.g. a library or local coffee shop) and need to use the restroom. Personally I’d take the laptop with me, as I somehow get the feeling that a loud alarm is not going to stop your machine disappearing out the door if it’s a Macbook Air. Know what I mean? Currently free of charge, full version coming.
Did you ever hesitate to leave your laptop for a few minutes in a public space like a library? No need for that with Laptop Alarm. Laptop Alarm will emit a loud alarm whenever someone tries to steal your laptop.