Google My Business Page FinderThis tool uses the Google Places API to return all Google My Business pages that Google thinks might possibly match the business name and zip code you entered (non US postal codes will work as well). It's useful for figuring out what local business pages are out there in Google that might be duplicates.
Be warned: this tool is using the Places API's "text search" call, which in my experience returns some listings where I have no clue how Google might have thought there was a match! But you can visually wade through the results to see the ones you really need to care about. Note that if you specify a postal code, I now use the Geocode API to get the lat/long for that postal code, and restrict the results returned by the Place Search to just locations within 50km (about 35 miles) radius.
Note: Google Places API seems to no longer return results for service-area businesses, i.e. if the address is hidden.
Note: This tool no longer shows the Google+ page for the business in its search results. Why not? Because the Google Places API, which used to show the Google+ page in its response, now returns a Google Maps page instead. See my article with more details about this change, and what it might mean for Google+ pages.