And another one :o)

"OpenStreetMap has already changed the face of mapping, and it continued its march on today as a potential main data source for a real-time navigation application. Because OSM is to be taken seriously, we are proud to release our very first Open SDK!

This toolkit grabs the Open tiles created from OpenStreetMap and allows developers to add interactivity to their maps, generate Points of Interests, produce advanced routing between two or more points, do a Nominatim search, plus numerous other features found on http://open.mapquestapi.com/sdk/js/v6.1.0/.

To get started with your own mapping application, simply follow the Basic Map documentation, then spruce it up by adding Controls and POIs/InfoWindows. Like all of MapQuest’s other Open Initiatives, an AppKey is not necessary and you’ll be able to dive directly into the SDK."