Alexa Internet公司是亚马逊公司的一家子公司，总部位于加利福尼亚州旧金山。于1996年由布鲁斯特·卡勒及布鲁斯·吉里亚特创立。作为互联网文件馆的分支，受到杰奎琳·萨福拉的埃托勒投资支持。于1999年，Alexa被亚马逊公司以约价值两亿五千万美元的股票买下。

Alexa分析提供各种网站的相关信息与网页访问量，以其Alexa.com网站闻名。透过收集用户的上网信息，以便统计网站流量及相关信息。Alexa为Alexadex.com提供搜索引擎，并为A9.com搜索引擎提供「网站信息」服务。

Alexa Internet, Inc. is a California-based company that provides commercial web traffic data and analytics. It is a wholly owned subsidiary of Amazon.com.

Founded as an independent company in 1996, Alexa was acquired by Amazon in 1999. Its toolbar collects data on browsing behavior and transmits them to the Alexa website, where they are stored and analyzed, forming the basis for the company's web traffic reporting. According to its website, Alexa provides traffic data, global rankings and other information on 30 million websites, and as of 2015 its website is visited by over 6.5 million people monthly.