1. PageBoss This new service is vast and extremely complete. It checks backlinks from all reputed social media sites, provides important information as if the site has a sitemap or not, google page rank, how many indexed pages, how many incoming links, domain age, etc. The information really shows a pretty clear understanding of where the site is standing. 2. Site Mention The tool digs up all possible social media mentions about your site on Google blog search, Twitter, Friend Feed, Youtube, Myspace, Flickr, Yahoo Answers, Digg, Delicious, Furl and Reddit. 3. Quark Base Analyzes every detail possible about a website including its ownership, server details and a huge list of details from social media channels. 4. Website Grader Website Grader grabs all information related to a website right from on site optimization metrics to off site factors like inbound links to social media channels pointing to the site. 5. Back Tweets This tool finds all tweets that link to your posts, whether the links are shortened or not. (via: tek3d.org)