Detectizr is a Modernizr extension to detect device, browser, operating system and screen.
https://github.com/barisaydinoglu/Detectizr
JavaScript Libraries and Functions · Compatibility
Get access to data on 10,612 websites that are Detectizr Customers. We know of 4,428 live websites using Detectizr and an additional 6,184 sites that used Detectizr historically and 1,696 websites in the United States.
Get a list of 10,612 websites using Detectizr which includes location information, hosting data, contact details, 4,428 currently live websites and an additional 9,882 domains that redirect to sites in this list. 6,184 sites that used this technology previously and 1,696 websites in the United States currently using Detectizr.