Dear Bernard,

A whole series of possible checking sites have been listed in this older thread:

https://www.researchgate.net/post/What_are_the_best_websites_to_check_plagiarism_for_most_of_the_Academic_Journals

Best Regards

André

try Viper

I believe Grammerly, if you use the App for the operating system or web browser plugin. Disclaimer: I have had a subscription for years so I may have access the free does not.

Also, Google. I cut and past paragraphs of key points in a paper sometimes during review.

Thanks all

Viper, grammerly