using a form plugin to search the directory

I notice on several of your showcase sites like the Hispanic Contractors and Washington Mediation Association they are using forms to filter the Connections Director with drop-down menus, check boxes, and radio buttons to select and filter the directory results. I’ve looked at your website, but don’t find any extensions or themes that do this. So I suspect they are using a form plugin like Contact Form 7 or Gravity Forms.

Do you have any suggestions/recommendations/documentation/sample code on how I can do this on my site using the cMap template?

Thanks,