article spinier software

Guys please can someone suggest best free article rewriter that can offer human-readable content.

Hi there, I never spin because original content, but I have now got 100s of original articles, many by iWriter that have the spintags ready added, others by other means with no spintags added. So I was thinking on spinning them to get some new material, as I don't spin much I don't really want...

I have needed free article spinier software and how I will use it that means its instruction also. If anyone know please help me.