Need a great App to not wake me up at night

Looking for a great app that will allow me to selectively turn off anything that would beep or ring during the night but perserve at least two things:

1. Phone - in case the family has an emergency.
2. Alarm - so I do not lose my job.

Facebook, tweets, reminders, etc. need to be turned off.

Help? Looking for the best one.

Thanks.