tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
Phantomas : PhantomJS-based web performance metrics collector and monitoring tool
Skipfish : Skipfish is an active web application security reconnaissance tool. It prepares an interactive sitemap for the targeted site by carrying out a recursi...
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
The coach helps you find performance problems on your web page. Think of the coach as a modern version of YSlow. The coach will give advice of how your page can be faster.