Brick A bundle of reusable UI components created to enable rapid development of cross-browser and mobile-friendly HTML5 web applications. HTML
Progression.js A jQuery plugin that gives users real time hints & progress updates as they complete forms. Javascript
RandomUser An API that provides you with a randomly generated user that can be used as placeholders in mockups. Testing Tools
Web Tracing Framework Rich tools for instrumenting, analyzing, and visualizing web apps. Make your app jank-free at 60fps! Testing
Secrets of the Browser Developer Tools. Get the most of your developer tools in Chrome, Firebug, Firefox, Internet Explorer, Opera and Safari. Testing
Am I Responsive? Show off how responsive design looks across different browsers easily with this 4 in 1 viewport tool Testing