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.
KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
Find My - Find My can help you locate your devices and your friends and family.
AppLock (FOSS) - A privacy App lock FOSS application.
Android Lost - Remotely control your Android phone from the internet or by SMS. Features:
Hexlock - Security app locker keeps apps private with smart profiles for any situation