Zipline seems to be the more like successor in this field. https://spectrum.ieee.org/automaton/robotics/drones/zipline-emphasizes-safety-with-its-delivery-dron

Zipline seems to be the more like successor in this field. https://spectrum.ieee.org/automaton/robotics/drones/zipline-emphasizes-safety-with-its-delivery-drones-in-preparation-for-us-operations https://spectrum.ieee.org/automaton/robotics/drones/zipline-...