jQBrowser is a plugin for the jQuery JavaScript library that replaces the $.browser object with a more robust and extensive detection.
http://davecardwell.co.uk/javascript/jquery/plugins/jquery-browserdetect/
JavaScript Libraries and Functions · Compatibility
Get access to data on 727,803 websites that are jQBrowser Customers. We know of 273,176 live websites using jQBrowser and an additional 454,627 sites that used jQBrowser historically and 215,510 websites in the United States.
Get a list of 727,803 websites using jQBrowser which includes location information, hosting data, contact details, 273,176 currently live websites and an additional 117,303 domains that redirect to sites in this list. 454,627 sites that used this technology previously and 215,510 websites in the United States currently using jQBrowser.