Advanced artificial intelligence technology is able to detect even highly paraphrased and rearranged similar content. See exactly where text is similar and related so you know if the work is original.Plagiarism Spectrum
Copyleaks provided a quick and detailed analysis of an article I was editing for a client and confirmed my initial suspicion that the article had been largely "lifted" from somewhere else! It saved me a tremendous amount of Googling specific phrases.
I am using it because it is simple and easy to use, and is good at finding matches. I tried about 30 different ones, and this one was the easiest. Everything that I need is there and it all works reliably, so I am happy.
I found that it is easy to use, the results are quick and it seems to do its proper function. I think one thing that differentiated Copyleaks was the accuracy and I didn't need to wait long to see results compared to other checkers.