The User-Agent reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

User-Agent

Time you got around to sponsoring a child
User-Agent in Internet Web browsing, refers to the name presented by a Web browser with information about the application being used. It is a text string that is sent via the HTTP protocol to a Web server and typically includes the name of the application, operating system, language and version number.

Table of contents
1 List of examples of user-agent strings

List of examples of user-agent strings

Gecko based browsers

Internet Explorer

KHTML based browsers