Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
Palaround - Meet people you should be friends with.
QGIS - QGIS is a desktop geographic information system, or GIS.
Digg - Digg delivers the most interesting and talked-about stories on the Web right now.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
quippd - quippd is a social news site that anyone can edit.