Check out I Write Like.
This is a fun site. Just paste your text into the box and click the Analyze button to see which famous writer your text most closely resembles.
It’s all in good fun – but it can be a subtle boost too. The couple of times I’ve done it, I’ve gotten Arthur Conan Doyle, Dan Brown, Jack London, and John Le Carre’. Not bad. I’ll take a comparison like that.