Formidable is hands down the best, most innovative and easy to use form builder for WordPress I've ever used. Calling this plugin a simple "form builder" is a bit of an understatement - people with no knowledge of HTML, CSS or programming can create extremely complex forms with ease.
Blair Williams (Caseproof)
I often tell people that Formidable is probably the most powerful and flexible WordPress plugin in existence and that it is hard to describe the possibilities that can be done with it. Thanks for all you guys do!