People, I’m pretty sure over half of the articles you read nowadays come out from a spinner such as this one, and you can’t even tell the difference… believe me I know – I publish a lot of these articles myself, using Spin Rewriter, and they are very good and believable, you wouldn’t know the difference between one of them and an article written by a human.
There is also the option to spin capitalized words (assumed to be proper nouns) as well as leave any number of words unchanged, depending on whatever you enter into the "ignore" field, separated by commas. You also have the option to only keep the sentences that were altered a minimum percentage, as indicated by the "Keep Sentences that Changed" option.
These days there are a lot of article rewriting softwares and it is pretty hard to choose one that will suit all your needs (quality + price – no subscription at least). When you will look for example at WordAI article spinner – you will notice that there is pretty expensive subscription (50 dollars per month) while spinnerchief costs only 77 dollars per year (which is about $6.5 per month).