MapBox is a suite of open source tools for creating custom maps in Amazon’s cloud infrastructure. MapBox’s TileMill toolkit is a fully configured open source tile rendering engine designed to create maps using any data set, whether your private data or freely available public sources.

MapBox.com also makes large public data sets available for easy access and use. Combining TileMill and these data sets together, MapBox provides the framework that we use to make some of the most beautiful custom maps in the world.

Requirements: -
Demo: http://mapbox.com/
License: License Free