The Drupal SEO modules pack is a series of Drupal modules aimed at helping you better search engine optimize your Drupal 6 site. The SEO package modules include:
Content Optimizer – Uses AJAX to provide recommendations for search optimization of page content directly from node edit forms. Also povides statistics for character count, word count, keyword frequency, density and prominence for vital page sections. Works with Page Titles and Nodewords modules to provide enhanced optimization.
Search Engine Terms – This module uses Yahoo!’s Term Extractor API to reveal the keyword phrases the search engines think your pages are about. The tool will send any content to Yahoo! and return the top 20 targeted keyword phrases. The module also allows you to create a search engine terms vocabulary for tagging. The vocabulary can be integrated with the More Like This module to create keyword focused article clusters.
Keyword Analyzer (in development) –This module integrates with third party keyword tracking tools to enable you to discover the best keyword phrases to target on your site.