More Waterfall chart generators
HttpWatch: This is paid software. A free evaluation version is also available. It provides more detailed information than Fiddler. Also, it is slightly more advanced than Firebug and works with both Firefox and Internet Explorer.
IBM Page Detailer: This Waterfall chart generator is proxy-based, similar to Fiddler. It provides more details than Fiddler, but is more difficult to use. Visit http://www.alphaworks.ibm.com/tech/pagedetailer for more details.
Site-Perf.com: This is a web-based Waterfall chart generator, similar to WebPagetest. It allows you to run tests from both Europe and the United States. Visit http://site-perf.com/ for more details.
Pingdom Page Test: This is a web-based Waterfall chart generator, with some nice sorting features. Visit http://tools.pingdom.com/ for more details.
Visual Round Trip Analyzer: This is another proxy-based generator, similar to Fiddler. However, instead of files, this shows TCP packets. It is strictly hardcore only. Visit http://www.microsoft.com/downloads/details.aspx?FamilyID=119f3477-dced-41e3-a0e7-d8b5cae893a3&displaylang=en for more details.