Live in an apartment with one of those intercoms that phones your phone?
Live in that apartment with more than one person?
This little sinatra app, along with a Twilio number, will simultaneously phone all the numbers provided and connect with the first phone to pick up.
There's also a simple admin interface to update the phone numbers.
To get going:
$ git clone git://github.com/afontaine/apartment-intercom-adapter.git $ rake $ rackup
Deploy as you will. No DB required.