ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Geocode Earth - Build smarter location experiences with our fast, accurate & affordable geocoding solutions.
ipapi - Web analytics with IP address lookup and location API
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.
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database
OpenCage Geocoder - Easy, Open, Worldwide, Affordable Geocoding.