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.
iLostFinder - iLostFinder is an anti-theft/lost app for iPhone and iPad.
Find My - Find My can help you locate your devices and your friends and family.
HiddenApp - HiddenApp gives organizations 24/7 visibility of their IT devices using track, trace & locate capabilities, all manageable from one simple user-friendly dashboard.
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
Wheres My Droid - Ever lost your phone and you go to call it to listen for the ringer and remember its on silent mode?