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.
Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
360 Total Security - 360 Total Security was created by Qihoo 360 Technology Co. Ltd. This Chinese-based company provides a number of software solutions for PC, mobile devices and online security. Read more about 360 Total Security.
iLostFinder - iLostFinder is an anti-theft/lost app for iPhone and iPad.
Microsoft Security Essentials - Microsoft Security Essentials is Microsoft's own foray into the world of virus protection.