Android: Most phone recovery apps require you to install the app before you lose the phone. Android Lost, however, can be remotely installed, and it comes with a slew of useful features beyond just locating your phone.
Android Lost is similar to previously mentioned Plan B, but Plan B only works for Android 2.0 to 2.3 and is dedicated to simply locating your missing phone. Android Lost, as the video above shows, not only locates by GPS (or network), but it can also remotely wipe or lock your phone, take pictures, send message popups, get call lists, erase the SD card, record sound from the microphone, start an alarm and much more.
You can install the app from the Google Play site, and then send an SMS to register your device with the Android Lost website, where you control the phone. If you have tablet without SMS, you can still remotely register the phone with the Jumpstart app.
Aviel Livay's story of how he used Android Lost to track his daughter's stolen phone showcases some of the best uses of the app and how useful it can be.
You can also use the app for non-recovery purposes -- to disable the lockcode if you've forgotten it, for example, or remotely control your Android device from afar.
Pick up the free app at the Google Play store.
Android Lost [Google Play]