Helps you write great content with search engines in mind. Keyword distribution and keyword density will help you.
This SEO plugin checks the content of posts/pages for the keyword density (single/phrases) while writing and is automatically setting the META-tags.
This SEO-Tool provides a keyword analyzer calculating the keyword density of the page/post content and generating statistics for keywords and phrases.
Monitors the keyword density of keywords you select in the whole blog and gives a live update of the keyword density of the post as you type.