Contact Forms for WordPress.
http://www.gravityforms.com/
Widgets · Feedback Forms and Surveys
Get access to data on 1,227,129 websites that are Gravity Forms Customers. We know of 410,343 live websites using Gravity Forms and an additional 816,786 sites that used Gravity Forms historically and 276,488 websites in the United States.
Get a list of 1,227,129 websites using Gravity Forms which includes location information, hosting data, contact details, 410,343 currently live websites and an additional 457,169 domains that redirect to sites in this list. 816,786 sites that used this technology previously and 276,488 websites in the United States currently using Gravity Forms.