Grammarly is your number one writing assistance. It has a lot of features one can't afford to resist. From Grammar checks, seamless suggestions to give you mistake-free And professional writing to plagiarism tests, Grammarly has become a must-have tool. A free account allows you to improve and expand your daily paper, while a premium account allows you to improve your writing at work, school, and other places where you want your communication to be heard as best as possible.
No tool has been able to beat the grammar check of Grammarly. What about the plagiarism checker of Grammarly?

To determine how good Grammarly plagiarism checker is, we would first conduct a plagiarism test for this document using Grammarly.
Then we will compare the results with other reputable and paid plagiarism checkers like Turnitin, plagiarism checker X, and others

See result here:

https://www.youtube.com/watch?v=SFJ6IytEtBM