[Webots](https://www.cyberbotics.com/#webots "Webots") is an open source robot simulator that provides a complete development environment to model, program and simulate robots. Thousands of institutions worldwide use it for R&D and teaching. Webots has been codeveloped by the Swiss Federal Institute of Technology in Lausanne, thoroughly tested, well documented and continuously maintained since 1996.
#### Installing Webots
Please check this [page](https://www.cyberbotics.com/download "page"). The steps is very easy and straight forward.
#### Running Simulator
1- open webots and open file libraries/SITL/examples/Webots/worlds/webots_quadPlus.wbt
please note that to re-run the simulator you need to stop ardupilot SITL then stop webots simulator "stop button". then press "run" button on webots and then rerun ardupilot SITL.
You can use [OpenStreetMaps](https://www.openstreetmap.org/ "OpenStreetMaps") with [Webots](https://cyberbotics.com/doc/automobile/openstreetmap-importer "Webots"), it is fairly straight forward. This is a very nice sample **./libraries/SITL/examples/Webots/worlds/pyramids_droneX.wbt**, and you need to run SITL using **./libraries/SITL/examples/Webots/pyramids_droneX.sh**
