You can use the Site Analyzer in Competition Strategy Studio to study the web page structure, page content and even the keyword distribution of competing sites.
The following are the contents of the lower panel in Site Analyzer.
Shows you the exact web page content (text) with out the codes and scripts. This is what the search engine spiders see.
Displays the keywords used in the web page along with the number of times (frequency) each keyword phrase occured.
Shows you the headers (h1, h2, h3, etc.) in the web page. Use it to check if the web page has a good heading structure and to improve the page headings.
Allows you to examine the http header returned by the web server. Use this to check for correct contect types, cookies, redirection codes etc.
Use this to view the actual HTML of the web page. Use it to look for comments, hidden keywords etc,