This is a proof of concept for a browser based Ground Control Station for UAVs talking MAVlink. It uses Node.js "serialport" module to get the data from a telemetry ground module, websockets and angular.js to update the view in real time.
More info here http://gaelbillon.com/realisations/station-de-controle-pour-drone/
Check out Mavelous, a more refined web GCS https://github.com/wiseman/mavelous
