The form generator mod_qlforms is based on the Joomla! xml form generation. Any parameter (calendar, text, email etc.) is at your service.
You can use it as:
* contact form
* form to fill database tabel
* major survey jumping from one form to the next
* do something else in prepared class for developers
As knowledge about xml formatting and Joomla! form generation is needed, mod_qlform is a useful and mighty tool for developers.
All form fields see here: http://docs.joomla.org/Category:Standardformfield_types