Here are two handy tools.
The first is a meta tag analysis tool will help you analyze your web pages and check for search engine compatibility. It analyzes meta tags, keyword density, load time, page size, title meta tag relevancy, description meta tag relevancy and keywords meta tag relevancy.
Check out the meta tag analysis tool.
Then there's the ‘Cool SEO Tool'.
Simply plug in your URL and a keyword phrase and the tool spits back info your site's Google rank for that keyword, Yahoo Rank, MSN Rank, number of pages indexed on Google, the number of pages index on AltaVista Pages, the number of Backlinks (Page), Backlinks (Domain), allinanchor Rank, Age of URL, and the number of occurences of the phrase on that page.
Better yet, it also shows you that information for the Top 10 sites in Google for the keyword you entered. You can check it out at Cool SEO Tool.