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 808,571 websites that are jQBrowser Customers. We know of 365,719 live websites using jQBrowser and an additional 442,852 sites that used jQBrowser historically and 283,957 websites in the United States.
Get a list of 808,571 websites using jQBrowser which includes location information, hosting data, contact details, 365,719 currently live websites and an additional 110,657 domains that redirect to sites in this list. 442,852 sites that used this technology previously and 283,957 websites in the United States currently using jQBrowser.