One of the best tool I’ve ever used! Well I am biased because I have used all the time. I learned a lot thanks to their website. But it is kinda pricey. Some people even don’t know what it is. So i will write it here. Your Alexa Rank is an estimate of how popular your site is relative to all other sites. The Alexa Rank answers the question: Compared to all other sites, how is my site doing? Note that since rank is a relative measure, your site’s rank is not only dependent on that site’s traffic, but also on changes to traffic on other sites. Alexa has a large traffic data panel consisting of millions of people all over the world. Based on the data from this sample, Alexa estimates the number of visitors to all sites on the Internet. It’s a complicated calculation that involves correcting for biases as well as identifying and discarding fake or spam traffic. Our data scientists are the best in the business and they make sure the data we present is free of noise and non-human data, so you can make the best decisions for your business.Every day, Alexa estimates the average daily visitors and pageviews to every site over the past 3 months. The site with the highest combination of visitors and pageviews over the past 3 months is ranked #1. The site with the least is ranked somewhere around 30 million. If no one in our measurement panel visited a site over the past 3 months there is no rank at all for that site.I took these from their blog but I hope it will be helpful for other people
