There are many free tools that will generate a Waterfall chart for you. One of those is Firebug, the popular add-on for the Firefox browser. Obviously, this tool works only for Firefox and not Internet Explorer or other browsers; so at the end of this chapter, you'll find other free tools that generate Waterfall charts for those browsers. But given the popularity of Firebug, we'll stick with that for now.
To use Firebug, you need to have the Firefox browser installed on your computer. Get it for free at http://www.mozilla.com/.
Once you have Firefox running, use it to open the Firebug home page at http://getfirebug.com/.
Here you'll find a link that installs Firebug.