http://WebsiteReckon.com contains a collection of useful features such as checking Google Page Rank (PR), Compete and Alexa Traffic Rank, Backlinks Checker, Server IP and Location on Google Map, DMOZ and Yahoo Directory Listings and more. You can use it for various purposes include doing research before buying or selling website; want to find out how popular the website is; use it as SEO analytic tool to improve your site performance; or just about curiosity.

http://websitereckon.com