OpenGTS is described as '(Open Source GPS Tracking System) is intended to provide a generic back-end web-based service for querying and viewing GPS related data. It is designed to operate independently of any specific GPS tracking device or protocol' and is an app. There are three alternatives to OpenGTS for a variety of platforms, including Android, iPhone, Windows, Linux and SaaS. The best alternative is Traccar, which is both free and Open Source. Other great apps like OpenGTS are Tomtom Telematics and GpsGate.
Whether your drivers are parked or on the move, get their precise, mapped location with fleet management software WEBFLEET. This can help with proof of delivery and allows you to monitor working-time guidelines compliance.