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Assignment Collector/Grader (what a mouthful!) was conceived in 2010 as a way to reduce the workload of an over-worked professor teaching a CS data structures class. It proved not only to reduce the grading workload, but also improved the lab completion rates among students, and grades overall improved as a result. Since it has turned out to be such a successful tool, it is now released under the AGPL license for others to use in their classrooms.