Keywords and Keyword Density are common terms in SEO (Search Engine Optimization). If you want to know your Keywords and Keyword Density for a particular Web Page (And, also your competitor's pages); then our Keyword Density Check Tool can help. SEO Keyword Density Check Tool is a PHP class driven tool that can save you time with Keyword Analysis. The tool even has a visually pleasant graph that you can use to print out your analysis and display it on any screen, or you can retrieve the keywords and use them in your own programs.
You may also want to check out our "Keyword Analyzer"; this Powerful Keyword Analyzer tool can Analyze any Page you Provide it and Compare any given Keywords against the data on the page.