Public911.com combines google maps with real-time 911 information that is freely available on the web. It was started for Seattle with www.seattle911.com and we decided to expand the service to allow for adding additional cities.
We have received many requests over the last year to add additional cities, and this is now possible with our new site. As long as the 911 call data is publically available, we will do our best to add the city to Public911.com.
Initially as www.seattle911.com, we ran into some hiccups (see below), but thankfully the sites have reversed their original decisions.