AtLAS is the modern day carrier pigeon: an open-source system for dispatching, receiving, and tracking personal autonomous delivery drones.
AtLAS-mobile is the official repository for the AtLAS (Autonomous Low Altitude Service) Android application, developed at West Virginia University.
If you're interested in setting up an AtLAS system, you'll also want to visit AtLAS-server, the home of the backend that powers AtLAS, as well as AtLAS-embedded, the home of the embedded software running on AtLAS drones.