Turnitin.com is Georgia Perimeter College's plagiarism detection tool. In addition to being a powerful plagiarism detection tool, it also offers a rich grading and feedback tool called GradeMark and a peer editing resource called PeerMark.
This integraded grading tool in Turnitin.com provides online grading tools including markup for grading of essays and papers. There are a range of common comments that can be dragged over to papers. In addition, instructors can create rubrics for a more holistic grading option.
PeerMark - TurnItIn Peer Review Tool
The PeerMark tool allows you to randomly or intentionally assign student work for peer review by other students in the course.