This tool mimics the function of a search engine spider, analyze your page content, and return a table of keyword density values for one, two, or three keyword terms.
Search Engine Watch provides tips and information about searching the Web, analysis of the search engine industry and help to site owners trying to improve their ability to be found in search engines.
This is a rather well distributed chart among search engine optimization professionals and clients that is updated regularly, and one that you shouldn't be without.
By placing a Sitemap-formatted file on your webserver, you enable our crawlers to find out what pages are present and which have recently changed, and to crawl your site accordingly.