Most teachers usually use Turnitin, as it is widely used in the industry for academic plagiarism checking. It checks students’ work against extensive databases, websites, and previous submitted papers. The main note for Turnitin is that it does not have any individual plans and hence makes it unaccessible to most teachers.
But tools like Quetext are becoming increasingly popular as reliable alternatives to Turnitin, particularly due to its DeepSearch™ technology, comprehensive contextual analysis, and easy-to-understand user reports.