Silent Mode Toggler does, semantically, what it sounds it does. It sets your phone's ring mode to silent (not vibrate) and back. You can access this powerful functionality either from the app itself, or from a Home Screen widget.
It also happens to be one of my first apps.
Keywords: silent, mode, airplane, toggle, sound, no, silence, amazing, switcher, home, screen, widget, ring, vibrate, on/off