OpenStudy is a for profit business funded by the National Science Foundation, the National Institutes of Health, and the Georgia Research Alliance. They are located at Georgia Tech's ATDC Center in Technology Square, Midtown Atlanta. OpenStudy is a social learning network where students ask questions, give help, and connect with other students studying the same things. It's stated mission is
...to make the world one large study group, regardless of school, location, or background."