Carto - The future of GIS? It’s Spatial Data Science. CARTO is the world’s leading Location Intelligence platform for Data Scientists, Developers and Analysts in Enterprise.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Geoblink - Geo-spatial intelligence platform.
ipapi - Web analytics with IP address lookup and location API
Xtract.io - Automated data extraction and preparation solution. 5 billion records aggregated from web pages and data sources.
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database