Here is a robotic manipulator that can interact with its environment and handle objects in a dexterous way. The G-WAM Mobile Manipulator has a mobile platform and robotic arm. It can be used for search & rescue missions, indoor/outdoor navigation, search & disposal of explosive devices, and other dangerous missions.
G-WAM has an open source ROS-based software. It has a max load capacity of 4kg and max speed of 3 m/s. With sensors, camera, stereohead, data acquisition board, and other accessories, you can get the most out of this robot.