What are some alternatives?
When comparing ipstack and IP2Location, you can also consider the following products
ipapi - Web analytics with IP address lookup and location API
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database
WIPmania - WIPmania provides a number of free products and services based on WorldIP geolocation database.
IP-API.com - Free IP Geolocation API - lookup any IP address
GeoNode - Open Source Geospatial Content Management System
Flagfox - Flagfox is a Firefox extension that displays a flag depicting the location of the current websites...