1. Turnitin
Turnitin is an Internet-based plagiarism-detection service run by the American company Turnitin, LLC, a subsidiary of Advance Publications.
2. Grammarly
Grammarly is a Ukrainian American-headquartered cross-platform cloud-based typing assistant that reviews spelling, grammar, punctuation, clarity, engagement, and delivery mistakes. It uses AI to identify and search for an appropriate replacement for the error it locates.