Alexa the Web Information Company Alexa - The Web Information Company. Services: Alexa Web Information Service - information about the Web available via amazon.com Web Services; Alexa Toolbar - get information about each site you visit; Alexa Search Engine - built on the Alexa crawl; Alexa Site Info Pages - detailed information about Web sites, like traffic details, contact info, related links and more. Alexa provides information about websites including Top Sites,Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Informationand Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-onthat shows data about sites as you surf the web with alexacompanyinformationservicessiteviawebby 98 users