The Graphhopper Java SDK by Graphhopper interacts with the API to access directions features, allowing developers to build routing applications. Documentation includes objective, request, response, shipment, and vehicle.
Factual continues to expand the world's access to data with a makeover and relaunch of its Geopulse API. Now renamed, Geopulse Context aims to provide developers with the geographic and commercial context of locations to enable personalized app experiences. The new API expands US Census data and commercial metrics available via Factual APIs.
Wikimapia is a web service that allows users to edit information on a world map in a wiki format. Users of the site can add places, edit them, and get the information previous users have entered. The info there is currently pretty sparse, but the service is rather new. The company also recently released a Wikimapia API that supports getting information from the web service.