For the Genus Alaexa, see Alexa (genus)

Alexa Internet, located in Building 37 of the Presidio of San Francisco, is a California-based subsidiary of Amazon.com. Alexa was founded in 1996 by Brewster Kahle and Bruce Gilliat as a commercial offshoot of the Internet Archive, Alexa Internet created related links for users of the Internet Explorer and Netscape Navigator web browsers.

Engineers at Alexa created the Internet Archive's Wayback Machine. Alexa also supplies the Internet Archive with web crawls.

In 1999, Alexa was acquired by Amazon.com for around $250 million in Amazon stock. Today, Alexa is primarily a Google-based search engine and Open Directory-based web directory. The "site info" link on the Alexa site lists related links for websites and also records how much web traffic they receive. Alexa's partnership with Google began in the spring of 2002, and with Open Directory in January 2003.

Alexa now also provides "site info" for the A9.com search engine.

See also

• List of search engines
• List of web directories
• Alexa Toolbar

External links

• Alexa Internet (http://www.alexa.com)
  • About the Alexa Traffic Rankings (http://pages.alexa.com/prod_serv/traffic_learn_more.html)
• The Internet Archive (http://www.archive.org)
• How Alexa Works (http://www.vmmg.net/vertical-marketing-resources/the_amazing_alexa_toolbar.shtml)