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.
Protag Duet - Losing a phone is much like losing your life: contact lists, emails, calendars, Instagram, private photos… you name it.
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
BiiSafe Buddy - Bluetooth keyfob for item tracking and location alerts
iLostFinder - iLostFinder is an anti-theft/lost app for iPhone and iPad.
Clue - Period and ovulation tracker app for iPhone