Finding the right courses every quarter is a challenge for undergraduate Huskies. To evaluate prospective courses, students depend on information resources that are often incomplete or unreliable. Coursector is an application that helps undergraduates find, compare, and select classes that best fit their academic goals and interests. Drawing from over 200,000 unique records of UW transcript data, our application provides students with personalized recommendations, to quickly narrow their course search, and clear visualization of how courses compare by workload, teaching quality, average student grades, and class demographics. Coursector makes it easy to compare course offerings side-by-side, including the same course taught by multiple professors. With Coursector, finding the perfect course is easier than ever.