Modules are self powered classes that will extend your site to be more powerful and add further features to it like a Photo Gallery and so on.
This module extends your site with user registration/my account dynamic forms allowing you to have guests register on your site. You can customize both forms with any custom fields you want.
It's a simple class that lets you have a search field/form and a keywords cloud of the most searched terms on your site and will display posts from all menu items or the ones you check in the admin when you click on the search module.
This is a simple class that extends the Dynamic Form by creating a simple contact form (when installed) with "Your name", "Email address", "Question/Comments" and "Verification code" fields, and when submitted will send an email to the Webmaster's email address defined in settings.