• Mapbox : Maps and location for developers
• Advanced geospatial analysis for browsers and Node.js

Mapbox : Maps and location for developers

https://docs.mapbox.com/help/getting-started/geocoding/

https://docs.mapbox.com/playground/geocoding/

Advanced geospatial analysis for browsers and Node.js

http://turfjs.org/

https://github.com/Turfjs/turf/