Frameworks

Player	Player is a free and open	Screenshot
Fawkes	Description	Screenshot

Simulators

Stage	Stage is a free and open 2.5D robot simulator. It can be used on its own, or as an extension of the Player robot server. Stage supports simulation of vehicle movement, and various sensors such as scanning laser range finders, SONAR arrays, cameras, fiducial markers, etc. Use of simplified sensor and movement models provide good fidelity and great scalability: Stage can easily simulate 100 or more robots.	Screenshot