Contact Forms for WordPress.
http://www.gravityforms.com/
Widgets · Feedback Forms and Surveys
Get access to data on 1,287,615 websites that are Gravity Forms Customers. We know of 367,809 live websites using Gravity Forms and an additional 919,806 sites that used Gravity Forms historically and 245,416 websites in the United States.
Get a list of 1,287,615 websites using Gravity Forms which includes location information, hosting data, contact details, 367,809 currently live websites and an additional 392,566 domains that redirect to sites in this list. 919,806 sites that used this technology previously and 245,416 websites in the United States currently using Gravity Forms.