Does anybody know of any open source project that deals with creating forms or surveys?
The engine needs to function something similar to Survey Monkey (surveys; each containing survey pages; each containing a survey element - radio boxes/check boxes/text areas or other components) - except that we have requirements to brand it with custom look and feel and we have our own custom form interactions. I believe that some of these custom interactions might be worth contributing back to the OSS community as well, but we would rather plug it into an existing project that creating one from scratch.
It would be preferable if such a project used PHP and MySQL but I am fine with any other combination. Any inputs on this would be very useful.