webhint : webhint is a linting tool that will help you with your site's accessibility, speed, security and more, by checking your code for best practices and co...
SPOFCheck : A CLI tool for detecting frontend SPOF, mainly blocking scripts and CSS
SPOF-O-Matic : Chrome extension for detecting and simulating frontend Single Points Of Failure. Detects likely third-party single points of failure as you browse and...
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.