If you need a form to database & email feature try
www.appnitro.com
It offers a form designer and backend processing/administration function
(PHP/MySQL) - it can post to a database and email to your webmaster (or
whoever you wish) and also an auto reply the the person posting the message
through the form (I see questions about that all the time on this group).
The good thing about this is that you can then put the created forms on any
site. The application itself can be hosted on one domain, and stores all
the records and data in its database.
At this time, it's only a single user - for the Admin person, and doesn't
allow any type of user management
for individuals to edit their own records etc.
This one also has an in-built captcha feature to combat the spam problem.