TurnitinIt is a web-based system used to prevent plagiarism and inappropriate citations in student assignments and projects. Uploaded homework, projects, etc. are automatically compared to resources in a very large data repository and a similarity report is created by detecting quotes, similarities, and inappropriate resource usage. In Turnitin's data repository, in addition to academic databases, magazines and publications, there are over 200 million student homework assignments and more than 17 billion web pages. It can work in an integrated manner with the CATS system.The Turnitin plagiarism report for student assignments can be viewed by instructors via their CATS accounts.