The History
of
User Agent Strings
What's a user agent?
What's a user agent?
User Agents
NCSA_Mosaic/2.0 (Windows 3.1)
Mozilla/1.0 (Win3.1)
user agent sniffing
Mozilla/1.22 (compatible; MSIE 2.0; Windows 95)
Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826
Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.7.5) Gecko/20041108 Firefox/1.0
Mozilla/5.0 (Macintosh; U;
PPC Mac OS X Mach-O;
en-US; rv:1.7.2) Gecko/20040825
Camino/0.8.1
Mozilla/5.0 (Windows; U;
Windows NT 5.1; de; rv:1.8.1.8)
Gecko/20071008 SeaMonkey/1.0
Mozilla/5.0 (compatible; Konqueror/3.2; FreeBSD)
(KHTML, like Gecko)
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 9.51
Mozilla/5.0 (Windows NT 6.0; U; en; rv:1.8.1) Gecko/20061208 Firefox/2.0.0 Opera 9.51
Opera/9.51 (Windows NT 5.1; U; en)
Mozilla/5.0 (Macintosh; U; PPC Mac OS X; de-de)
AppleWebKit/85.7 (KHTML, like Gecko) Safari/85.5
Mozilla/5.0
(Windows;
U;
Windows NT 5.1;
En-US)
AppleWebKit/525.13
(KHTML,
like Gecko)
Chrome/0.2.149.27
Safari/525.13