Browserhawk

This Engineering workstation labs page at the University of Illinois “summarizes browsers used by 13365 hosts in 79 countries making 113299 accesses on 30/Sep/1999 to the Engineering Workstations WWW server at the University of Illinois at Urbana-Champaign. The lion’s share of accesses to this server are for engineering student home pages. Information about browser types is extracted from the User-Agent HTTP Request header provided by nearly all browsers.” This is usually updated daily.