The geo-info Ruby Sample Code demonstrates how to make requests that include latitude and longitude, returning a JSON object with a location. The API will also return a list of cities and places nearby sorted by distance.
MapAnything describes itself as a Location of Things company. Recently, the company introduced a suite of APIs that provide programmatic access to its routing and optimization engines. The company is specifically focused on fleets and routing B2B companies, and plans to introduce more APIs soon.