Prey - Prey is the simplest and most reliable solution for tracking, data protection & management for Windows, Mac, and mobile devices. Track with precise location, wipe, reset and secure devices across all platforms.
Barcode Alarm Clock - Alarm clock that won't stop ringing until you scan a barcode
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
Wakefy - Turn your Mac into a Spotify alarm clock.
iLostFinder - iLostFinder is an anti-theft/lost app for iPhone and iPad.
Alarmy - World's most annoying alarm app