Google Tools
This tool examines the test on the page you enter in step on. After you click the 'Go' button you will see all the most common keyword and phrases on the page you entered. It will show the number of times the word or phrase appears and the density. Clicking the 'Go' button again will cause the tool to run searches for each keyword and phrase and show pages with your domain that rank highly for that particular keyword or phrase. Step two may take a few minutes to complete.
Page Text Rank Checker Tool