Mute. from MNO Company is one of my absolute favorite apps on the Android. It’s the simplest, most elegant, most useful app I own. Have you ever had to go in to a meeting, turned the “ringer volume” on the side of the phone down, only to have something like MEDIA volume or NOTIFICATION volume still up? Android made that quite confusing. Mute. makes it easy again.
With one tap, I can literally Mute everything on the phone, EXCEPT for alarm clocks. Just install the app, and place a shortcut on your home screen. When you tap it, you will see a little pop up at the bottom of the screen alerting you that you have been muted, press it again to unmute. Here’s another selling point, it’s totally free, so head over to the Android Market (sorry, Google Play?) and download Mute. for Free.