My fourth open source release this week comes from work I’ve done for my employer, The Bivings Group. Today, we are releasing a set of code that assists with aggregating markers on a Google Map. Our clients wanted to be able to display markers on a map reflecting the locations of people who provided their location (city, state, zip, and in some cases, street address), but with tens of thousands of expected sign-ups, it’s not feasible to display all the points on the map at once.