Two free great tools which I use:
Site Juice of Pear Analytics (www.pearanalytics.com). It is free right now cause it is in the Beta testing phase. Will check ranks in Google, Yahoo and Bing and will also store them for you.
SEO toolbar (a Firefox plugin) which has the Rank Checker tool. Very handy for instant rank checks but the disadvantage is that it automatically does not store your rank history.
QUOTE(JACKADEN @ Apr 17 2013, 06:57 AM)
Once I had found a very nice site which shows all the information of a URL and was providing a great report and a score of your site. I am not able to remember which it was. Can you suggest your favorite SEO site checker? Thanks!