Gazebo is a multi-robot simulator for both indoor and outdoor environments. It is capable of simulating a population of robots, sensors and objects, but does so in a three-dimensional world. It generates realistic sensor feedback, object collisions and dynamics.
Website: The main gazebo website, which contains news, downloads, and contact information.
Tutorials: Tutorials that describe how to use Gazebo and implement your own simulations.
Wiki: A collection of user supported documentation.