Alexa Internet, Inc. is a California-based subsidiary company of Amazon.com that is best known for operating a website that provides information on web traffic to other websites.
In December 2005, Alexa opened its extensive search index and web-crawling facilities to third party programs through a comprehensive set of web services and APIs. These could be used, for instance, to construct vertical search engines that could run on Alexa's own servers or elsewhere. Uniquely, their Web Search Platform gives developers access to their raw crawl data. In May 2007, Alexa changed their API to require comparisons be limited to 3 sites, reduced size embedded graphs be shown using Flash, and mandatory embedded BritePic ads.
In April 2007, Alexa v. Hornbaker was filed to stop trademark infringement by the statsaholic service. In the lawsuit, Alexa alleges that Hornbaker is stealing traffic graphs for profit, and that the primary purpose of his site is to display graphs that are generated by Alexa's servers. Hornbaker removed the term Alexa from his service name on March 19, 2007. Nevertheless, it should be noted that Alexa expressly grants permission to refer its data in third-party work subject to suitable credits.
