Woorank is a SEO Website Analysis Tool to help developers boosting their client's websites.
See people, traffic data, similar sites, social comments, description, social popularity and much more about websites
ClearWebStats.com is a free tool for webmasters to track and display web data from most websites.
Very functional service that returns detailed results from search engines , social bookmarking sites and also provides verification of data as whois or W3C validation.
Rankbuzz is a domain information and SEO tool, when a url is entered into the box and you hit "go!" you are given a number of pieces of information about the entered url.