Angular Js Boilerplate
Simple AngularJS Boilerplate to kick start your new project with SASS support and Gulp watch/build tasks
Monitor.io
remote monitoring and debugging for socket.io
Hotel
Start apps from your browser and get local domains without editing /etc/hosts http://i.imgur.com/DrLjbIi.gif
Holder
Holder renders image placeholders entirely on the client side.
Hashgrid
A little tool that inserts a layout grid in web pages, allows you to hold it in place, and toggle between displaying it in the foreground or background.
Bower
A package manager for the web, created at Twitter
Jscritic
Quickly check how well 3rd party script behaves.
Treant Js
Treant.js - javascript library for drawing tree diagrams
Boomerang
End user oriented web performance testing and beaconing
Vorlonjs
A new, open source, extensible, platform-agnostic tool for remotely debugging and testing your JavaScript. Powered by node.js and socket.io
Quixote
CSS unit testing
Mimosa
A lightning-fast, modular, next generation browser development tool.
Apitizer
API mocking for client JavaScript applications
Galen
Layout and functional testing framework for websites
Should.js
BDD style assertions for node.js -- test framework agnostic
Gulp
The streaming build system
Argon
An open-standards augmented reality platform for the web