The Omron Adept MobileRobots Pioneer 3-DX is a rugged general purpose differential-drive mobile robot platform with several options including sensors, onboard computer, autonomous navigation software, gripper, and more.
The Pioneer 3 can be used in ROS using the “rosaria”, “rosarnl”, or “p2os” drivers, and model and launch configuration is available. Visit http://wiki.ros.org/Robots/AMR_Pioneer_Compatible for more information.