This open-source library contains utilities that are useful for a wide range of applications using the Google Maps Android API.

• Marker clustering — handles the display of a large number of points
• Heat maps — display a large number of points as a heat map
• IconGenerator — display text on your Markers
• Poly decoding and encoding — compact encoding for paths, interoperability with Maps API web services
• Spherical geometry — for example: computeDistance, computeHeading, computeArea
• KML — displays KML data
• GeoJSON — displays and styles GeoJSON data

For more information, check out the detailed guide on the Google Developers site. You can also view the generated reference docs for a full list of classes and their methods.