Scribbr - Scribbr is an online proofreading and editing service used for the academic activities of the students.

Turnitin - Turnitin is preferred by educational institutions around the world for preventing plagiarism. Instructors at all levels of education can request that students use the service to submit papers, and Turnitin checks those papers for plagiarism.

Quetext - We've helped more than 5 million students, teachers, and professionals identify potential plagiarism in their work.

Unicheck - The plagiarism checker Unplag scans across the internet, repositories, open sources content and databases. It delivers real-time results and has no cached data.

PlagiarismDetector.Net - Plagiarism checker free and accurately detects copyright content from assignments or Documents with 0$ cost and ONE-click essay checker.

PlagScan - The Internet makes plagiarism a bigger problem than ever.