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 94,727 websites that are Algolia Customers. We know of 31,174 live websites using Algolia and an additional 63,553 sites that used Algolia historically and 17,982 websites in the United States.
Get a list of 94,727 websites using Algolia which includes location information, hosting data, contact details, 31,174 currently live websites and 63,553 sites that used this technology previously and 17,982 websites in the United States currently using Algolia.