metaflop : Metaflop is an easy to use web application for modulating your own fonts. Metaflop uses Metafont, which allows you to easily customize a font within t...
Phantomas : PhantomJS-based web performance metrics collector and monitoring tool
The Coach : 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 you...
Squoosh : Squoosh is an image compression web app that allows you to dive into the advanced options provided by various image compressors.
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
BackstopJS automates visual regression testing of your responsive web UI by comparing DOM screenshots over time.