Jscritic
Quickly check how well 3rd party script behaves.
Should.js
BDD style assertions for node.js -- test framework agnostic
Jquery Mockjax
The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses
Thrill
Runs tests in many browsers.
Screenlog.js
Bring console.log on the screen
Apitizer
API mocking for client JavaScript applications
Monitor.io
remote monitoring and debugging for socket.io
Wire
A light, fast, flexible Javascript IOC container
Xv
:x: :heavy_check_mark: A beautifully simple and capable test runner
Tlapse
📷 Create a timelapse of your web development... or just automatically take screenshots of your hard work ;)
Mimosa
A lightning-fast, modular, next generation browser development tool.
Brjs
BladeRunnerJS (BRJS) is an open source development toolkit and framework for modular construction of large single-page HTML5 apps. It consists of a set of conventions, supporting tools and micro-libraries that make it easy to develop, test, deploy and maintain complex JavaScript apps.
Holder
Holder renders image placeholders entirely on the client side.
Phantom Css
Visual/CSS regression testing with PhantomJS
Quixote
CSS unit testing
Intern
A next-generation code testing stack for JavaScript.
Boomerang
End user oriented web performance testing and beaconing