SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Storepoint Store Locator - Fully customizable store locator for your website.
ipapi - Web analytics with IP address lookup and location API
Awesome Store Locator - Awesome Store Locator is a powerful yet simple to use store locator.
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database