GSMtasks is a tool for managing mobile fleets of drivers, couriers, and technicians. It optimizes driving routes and improves employee satisfaction and customer satisfaction rates. Drivers can access tasks via mobile applications, view tasks on a map or list, use navigation apps, contact customers, and receive notifications. Back-office workers can work more efficiently and communicate with the front office more effectively. Customers benefit from increased service quality, accurate ETA's, and notifications at each step of the delivery process.