Open Web Services
Open Leaflet Plugins
Open Map Tiles
MapQuest currently offers two tilesets based on Open data: the MapQuest-OpenStreetMap Tiles and the MapQuest Open Aerial Tiles. We also offer our custom style files on top of Open data. The tiles are free to use and do not require an application key. The tiles are great for open source frameworks like Leaflet and OpenLayers!
Beginner's Guide to OpenStreetMap
OpenStreetMap has been called the Wikipedia of mapping data. It is completely crowdsourced and can be edited by anyone! No more waiting months for data updates - you can fix mapping issues in a matter of hours rather than months.