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 10,104 websites that are Detectizr Customers. We know of 4,542 live websites using Detectizr and an additional 5,562 sites that used Detectizr historically and 1,764 websites in the United States.
Get a list of 10,104 websites using Detectizr which includes location information, hosting data, contact details, 9,511 currently live websites which includes 4,969 domains that redirect to sites in the list. 5,562 sites that used this technology previously and 1,764 websites in the United States currently using Detectizr.