Turnitin is an internet plagiarism prevention service created by iParadigms, LLC, first launched in 1997. It checks for potential unoriginal content by comparing papers submitted to various databases using a proprietary algorithm. It scans its own databases, and also has licensing agreements with large personal academic databases. Turnitin can help to ensure final quality and originality, as well as identify weaknesses in the text.

In the academic field, Turnitin is a tool that allows teachers to check students' work, helping to detect incorrect citations or possible plagiarism. This software will allow them to know the degree of similarity in the documents produced by the students, serving as a guide for them to take responsibility for their work and cite appropriately.