Backbone debugger for Firefox
Framework-agnostic, micro-library for getting stack traces in all web browsers
Playing with console errors, experimental project.
Quickest way to get started with ampersand.
Runs tests in many browsers.
Just a better way to test AngularJS apps.
Bluebird is a full featured promise library with unmatched performance.
remote monitoring and debugging for socket.io
Layout and functional testing framework for websites
The streaming build system
The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses
BDD style assertions for node.js -- test framework agnostic
Visual/CSS regression testing with PhantomJS
A lightning-fast, modular, next generation browser development tool.
An automated front-end setup