Foursquare - perhaps surprisingly - release a large proportion of their geospatial place data (eg business and other Points of Interest), hoping it seems to challenge Google Maps’ proprietary data layer. https://location.foursquare.com/resources/blog/products/foursquare-open-source-places-a-new-foundational-dataset-for-the-geospatial-community/ (via @mrchrisadams)