Algolia's Search API makes it possible to deliver a search experience in your apps & websites.
http://algolia.com
Widgets · Site Search
Get access to data on 118,634 websites that are Algolia Customers. We know of 37,855 live websites using Algolia and an additional 80,779 sites that used Algolia historically and 22,109 websites in the United States.
Get a list of 118,634 websites using Algolia which includes location information, hosting data, contact details, 37,855 currently live websites and an additional 154,676 domains that redirect to sites in this list. 80,779 sites that used this technology previously and 22,109 websites in the United States currently using Algolia.