MozRank is a 10 point score given by Moz.com to any web page. MozRank represents a link popularity score. It reflects the importance of any given web page on the Internet. It is based off numbers of backlink and quality of backlinks. Page with higher MozRank are likely to appear higher in Google search result page.
This tool shows the MozRank of multiple urls in one request.
A web page's MozRank can be improved by getting lots of links from semi-popular pages or a few links from very popular pages.