I use seoQuake. Its a free plugin for Mozilla Firefox. It will give you all the necessary SEO information for any site you want to check. Thanks
If you are calculating 'seo score' then Web CEO has a seo score functionality. It is pricey though, not free.
SeoQuake gives pretty accurate . . . and i prefer to use this only . . . . _____________________________________________________________ New York Wedding planner, Wedding planner New York
I'd have to agree; websitegrader is a nicely made application that checks your site in different ways that you are able to know what you should be working on.
For checking seo score: http://www.wsanalyzer.com/tools/seo-score-calculator.php For checking seo score by keywords: http://www.wsanalyzer.com/tools/seo-score-calculator-by-keywords.php Best Regards...
I use the firefox webrank toolbar that gives me a quick view of the PR and number of indexed page and backlinks for whatever page I am viewing. This is only good for seeing the PR of the homepage of the site, for a detailed analysis I use the site analysis and statistics tools at http://www.seoheap.com/?q=siteanalysis which allow you to see PR for any single page of a website alongside how much PR that page leaks.
I mostly use different tools for seo but i thought none of them are 100% authentic. But i would suggest seomoz for making your search engine optimization very clear and effective.