The name of a spider as defined by the owner. For example, the agent name for the spider owned by Northern Light is "Gulliver".

Names given to web browsers and programs related to the web. The agent name for Microsoft Internet Explorer 6.0 is: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98) or Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.1), while for Google's spider it is: Googlebot/2.1+(+http://www.googlebot.com/bot.html)

Agent Name is the name of the browser/spider that is currently visiting a page. Spider is a robot sent out by search engines to index particular websites on the internet. When the indexing process is being done, it is called as 'being spidered'.