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.

Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.

Android Lost - Remotely control your Android phone from the internet or by SMS. Features:

iKeyMonitor - iKeyMonitor is a mobile app for both iPhone and Android devices that with parental control capabilities and phone monitoring features.

iLostFinder - iLostFinder is an anti-theft/lost app for iPhone and iPad.

Mobisafer - Mobisafer is a multi-purpose application that primarily works as a mobile backup app.