Is their any tools or software available in market (free or Paid) to rewrite the Article or site content or Press release.
There is plenty of articles rewriter on the market today. Just search on Google and you will get either for free or pay for it.
There are lots of rewriting tools out there, but the ones that I have used took longer to use than it took for me to write the article in the first place. I guess if you were trying to re-do several articles for various reasons this sort of program might be helpful, but I would suggest going through the finished products to check for correct word usage, spelling, and grammar.
I just you hire a good writer and don't worry about these programs - I'm sure none have the abilities of a real writer!