SwoopThat.com is an online textbook price comparison service. Based in San Diego, California, it specializes in college textbooks but includes high school textbooks as well. The company's books by course search engine lets students input their class schedules, see all the required textbooks for those schedules, and find the cheapest online sources of those books. The search engine also includes a textbook exchange feature through which students can buy and sell books from other students.