ReachOut - ReachOut is a field service management suite to streamline field processes with customizable mobile-based forms and workflow.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
DeltaSalesApp - Field Sales Force Automation & Field Force Tracking Software
ipapi - Web analytics with IP address lookup and location API
Smart Service - Smart Service's QuickBooks integration makes it the ultimate scheduling and dispatch software for HVAC, plumbing, pest control, and other service industries.
ipinfo.io - Simple IP address information.