Accuray, Inc. is a radiation oncology company, which engages in the development, manufacture, and sale of treatment solutions that include CyberKnife and Tomo Therapy systems, designed to deliver radiosurgery, stereotactic body radiation therapy, intensity modulated radiation therapy, image-guided radiation therapy, and adaptive radiation therapy. The company was founded by John R. Adler in 1990 and is headquartered in Madison, WI.