nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
http://nginx.net/
Web Servers
Get access to data on 82,781,604 websites that are nginx Customers. We know of 2,000,006 live websites using nginx and an additional 80,781,598 sites that used nginx historically and 1,270,371 websites in the United States.
Get a list of 82,781,604 websites using nginx which includes location information, hosting data, contact details, 2,000,006 currently live websites and an additional 1,865,107 domains that redirect to sites in this list. 80,781,598 sites that used this technology previously and 1,270,371 websites in the United States currently using nginx.