SPOFCheck : A CLI tool for detecting frontend SPOF, mainly blocking scripts and CSS
Lighthouse : Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authenti...
PhantomJS : PhantomJS is a headless WebKit with JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas...
Rich tools for instrumenting, analyzing, and visualizing web apps.