how to check a visitor on a website

do you wanna know how many visitor your or other website have? here is 10 list of a website that will show you, the total of a visitor that a website have for free. 

http://www.alexa.com Offers a web search and browser toolbar that learns from users and provides them with context sensitive information about sites. http://www.alexa.com/

Compete Offers clients information on what visitors are doing, buying, and looking for on their site by monitoring collective behavior. http://compete.com/

Site Profile Search | Compete Compete.com site profile search page ... Tell a Friend. Compete, Inc © 2000 - 2009. Compete, Inc. Terms of Service. Privacy Policy ... http://siteanalytics.compete.com/

Quantcast - Open Internet Ratings Service Quantcast is a new breed of measurement service helping buyers and sellers quantify the characteristics of digital audiences against which they can activate ... http://www.quantcast.com/

Alexaholic: Website Statistics and Website Traffic Graphs Free web traffic metrics, top sites lists, site demographics, hot urls, and more... Obama reps Chicago's South Side, delivers first All-Star pitch ... http://alexaholic.com/

Statsaholic: Website Statistics and Website Traffic Graphs Statsaholic blends website traffic graphs with a lightweight ajax interface. ... Website, screenshots, copy and code are ©2006-2009 Statsaholic.com. ... http://www.statsaholic.com/

Traffic Estimate - Web Site Traffic Analysis and Other Web Site Tools No information avaiable http://www.trafficestimate.com/

Compare Alexa, Compete and Quantcast Traffic Graphs - AttentionMeter Use the AttentionMeter Bookmarklet to triangulate traffic graphs from Alexa, ... AttentionMeter is neither affiliated with nor possible without Alexa, Compete or ... http://attentionmeter.com/

Dataopedia.com - All you need to know about a website We gather all the information that's available online about , from more than 20 different sources. Know more about here, in Dataopedia.com http://dataopedia.com/

Teqpad.com|| Find Pageviews,Visits,Visitors,Unique Visitors,Website Worth... No information available http://www.teqpad.com/