Hi !
Mapzen, which focused on the core components of map display including search and navigation, has been used by organizations including Eventbrite, Foursquare, Mapbox, The World Bank, Snapchat, HERE Technologies and Mapillary.
Its open platform provides developers with capabilities to take wide-ranging and customizable data sets and build them into vibrant maps equipped with search and routing services, according to the Linux Foundation. The data sets can be augmented with their own libraries and processed in real-time, which might not be possible with proprietary mapping or geo-tracking services.
With the Linux Foundation adopting it as an open-source project, Mapzen will continue its work to be open, sustainable and accessible to the user community.
https://www.mapzen.com/
Regards