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 102,747 websites that are Algolia Customers. We know of 18,838 live websites using Algolia and an additional 83,909 sites that used Algolia historically and 11,529 websites in the United States.
Get a list of 102,747 websites using Algolia which includes location information, hosting data, contact details, 86,519 currently live websites which includes 67,681 domains that redirect to sites in the list. 83,909 sites that used this technology previously and 11,529 websites in the United States currently using Algolia.