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About Alexa Internet
Founded in April 1996, Alexa Internet grew out of a vision of Web navigation that is intelligent and constantly improving with the participation of its users. Along the way Alexa has developed an installed based of millions of toolbars, one of the largest Web crawls and an infrastructure to process and serve massive amounts of data.For users of Alexa's Toolbar and web site this has resulted in products that have revolutionized Web navigation and intelligence. For developers this has resulted in a set of tools unprecedented in scope allowing whole new services to be created on the Alexa data and platform.
Alexa Products and Services
Alexa Toolbar
Alexa could not exist without the participation of the Alexa Toolbar community. Each member of the community, in addition to getting a useful tool, is giving back. Simply by using the toolbar each member contributes valuable information about the web, how it is used, what is important and what is not. This information is returned to the community as Related Links, Traffic Rankings and more.Want to help? Install the Alexa Toolbar, and tell your friends. The more people use Alexa, the more useful it will be.
Alexa.com
Alexa's Web site is built on the notion that timely and relevant information is essential to a vital web experience.Alexa Site Information - Alexa has built an unparalleled database of information about sites that includes statistics, related links and more. All of this information can be found on Alexa's Site Overview pages, Traffic Detail pages and Related Links pages. To access these pages, simply type the URL of any site into the Alexa Search box.
Alexa Top Sites - Alexa has lists of Top Sites available by country, language or in a category. You can download a free file of the global top million sites sorted by Alexa Traffic Rank.
Site Owner Tools
Alexa has created a series of tools specifically for web site owners. These tools can help to drive traffic, make money, find broken links and more! Go to Site Owner Tools.Alexa Web Services
In November 2005, Alexa released the Alexa Web Information Service on the Amazon.com Web Services platform. Gain access to Alexa's processed information about the Web, including traffic details, related links and more. See Alexa Web Services on Amazon.com.Technology
How and Why We Crawl the Web
Alexa is continually crawling all publicly available web sites to create a series of snapshots of the Web. We use the data we collect to create features and services:- Site Information: Traffic rankings, pictures of sites, links pointing to sites and more
- Related Links: Sites that are similar to the one you are currently viewing
To programmatically access Alexa's vast information about the Web, please visit Alexa Web Information Service. To keep Alexa from crawling your site, please visit this page.
Gathering Web Usage Information
In addition to the Alexa Crawl, which can tell us what is on the Web, Alexa utilizes web usage information, which tells us what is being seen on the web. This information comes from the community of Alexa Toolbar users. Each member of the community, in addition to getting a useful tool, is giving back. Simply by using the toolbar each member contributes valuable information about the web, how it is used, what is important and what is not. This information is returned to the community with improved Related Links, Traffic Rankings and more.Finding Patterns in Data
The Alexa services are derived from our uniquely powerful combination of Web content and usage information.Site Stats
Alexa gathers Site Stats from a variety of sources to provide key statistics about each site on the web. These include: Traffic Rank and Speed which are derived from Web usage information, and Other sites that link to this site, and Online Since, both of which come from Web content. For an example of Site Stats, see the Alexa Overview page for Schwab.com.
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Contact Info
Alexa provides contact information for Web sites by mining for Web content gathered in the crawl. This information includes Site Owner, Address, Phone Number and contact e-mail address. See Contact Info for Schwab.com.
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Traffic Details
Web usage information is utilized to provide information about the number of page views and number of users that Web sites receive. This data is also the basis for the Alexa traffic rank and traffic history graphs. See Traffic Details for Schwab.com
Our goal for these features is to help people navigate the Web more efficiently by giving them all the information they need to make informed decisions about the sites they visit.
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Related Links
Whenever an Alexa Toolbar user visits a web page, the Alexa Toolbar retrieves information from the Alexa servers to suggest other pages that might be of interest to the user. To generate Related Links, we use several techniques, including:
- The usage paths of the collective Alexa community- this is the most important source of our information, since these paths show us which web sites our users believe are important and interesting.
- Clustering - the hundreds of millions of links on the Web can be used to find clusters of sites that are similar and relevant to one another. We mine this data by using custom databases to find and identify these clusters.
- Users' suggestions - we consider our users' suggestions to augment our Related Links recommendations.
The Alexa Toolbar
The Alexa toolbar is a program written by Alexa Internet that users install into the browser. Every time the user changes pages, the Alexa toolbar communicates with Alexa servers to retrieve information which is then displayed in the toolbar.Donation of the Information to the Internet Archive
As a service to future historians, scholars, and other interested parties, Alexa Internet donates a copy of each crawl of the Web to the Internet Archive, a (501(c)3) nonprofit organization committed to the long-term preservation and maintenance of a growing collection of data about the Web. At Alexa, we believe that saving and preserving our early digital heritage is important today and essential for future generations. We also believe that a public charity is the best kind of organization for preserving this global asset. More information about accessing archived materials is available at the Internet Archive, www.archive.org.Alexa's Management Team
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Responsibilities at Alexa
President
Educational Background
Dave holds a B.S. in Physics from Louisiana State University. He was awarded a National Science Foundation Graduate Fellowship to attend the University of California at Berkeley, where he received his M.A. in Astrophysics. Dave is currently pursuing an MBA at the Haas School of Business at UC Berkeley.
Work History
Dave joined Alexa Engineering in 2000 and has spearheaded the design and development of distributed systems such as the Wayback Machine. Prior to his current position, Dave was Chief Revenue Officer, Vice President of Engineering, and Director of Crawl Engineering.
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Responsibilities at Alexa
As Product Manager for the Alexa website, Greg managed the recent release of the new Alexa site, and is busy working on getting a slew of new features out on the site.
Educational Background
Greg holds Bachelor's and Master's degrees in Mechanical Engineering from the University of Illinois at Urbana-Champaign.
Work History
As Manager of Web Services at Alexa, Greg managed the release of the Alexa's web services on the Amazon Web Services Platform.
Prior to joining Alexa, Greg worked in the robotics industry. He was a co-founder of Commotion Technology, Inc. - the first company using java to control industrial robots. Prior to that he was Software Product Manager at Adept Technology, Inc.
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Responsibilities at Alexa
Ron Shalhoup is Sr. Operations Manager at Alexa Internet. Prior to assuming his current role, Ron served as Infrastructure Architect for eight years.
Educational Background
Ron holds a B.A. in Computer Science from the University of Delaware, a M.A. in Demography from Georgetown University, and he is currently pursuing an MBA with an emphasis on sustainability at the Presidio Graduate School.
Work History
Ron has nearly twenty years of professional experience in the tech industry with a variety of positions which included manager, senior member or lead roles in software development, systems administration, network design and monitoring, and configuration management. Some of Ron's previous employers and clients include Sun Microsystems, Sybase, Diba, CACI, and Georgetown Medical Center.
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Responsibilities at Alexa
Steve manages Alexa's crack team of software engineers.
Educational Background
Steve received a B.S. in physics and a B.A. in philosophy from the University of California, Irvine, and his M.A. and Ph.D in astronomy from the University of California, Berkeley.
Work History
Steve joined Alexa as a Data Mining Engineer in 2005. Prior to assuming his present role, he performed engineering duties for and was the technical lead on a variety of Alexa products.
Non-work History
Steve currently resides in Oakland, CA, where he enjoys scuba diving, rock and roll, and the pursuit of various adventures.
