Sitespeed.io : Sitespeed.io is an open source tool that helps you analyze and optimize your website speed and performance based on performance best practices. It col...
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
Which loads faster? : Pages compete head-to-head in your browser to see who's fastest!
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...
Catches mail and serves it through a dream.
MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface.