SimpleGeo provides an extremely scalable, cloud-based interface for storing, managing, and querying location data. Their prime offering includes a data library, tools for analyzing geodata, and mobile SDKs for quickly deploying advanced location features.

All of the SimpleGeo API is available through a REST interface using OAuth authentication. SimpleGeo data is made up of layers, which contain records. Each record can have metadata attached in the form of properties.

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