Sent From My...
This deliberately misleading app for iOS, Android, Blackberry, and Symbian devices lets you pretend that you have a different phone or tablet than the one you actually own. The app automatically appends messages such as "Sent from my iPad," "Sent from my Droid X," or even "Sent from my Commodore 64" to outgoing e-mails, regardless of what you're really using. You can also append "Sent from" notes for devices that don't exist, such as "Sent from my Apple Galaxy Tab" or "Sent from my Nokia Blackberry." The only thing missing is a reason to do any of this, beyond distributing marketing copy for competing and/or fictional platforms.
Platform: iOS, Android, BlackBerry, Symbian