Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Sentry
Sentry is a realtime error logging and aggregation platform
Page.js
Micro client-side router inspired by the Express router (~1200 bytes)
Imagesloaded
JavaScript is all like "You images done yet or what?"
Batman
Fighting Crime and Kicking Apps
Jquery Timeago
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").
Radio
Dependency-free Chainable Publish/Subscribe Library for Javascript
History.js
History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you can modify the URL directly, without needing to use hashes anymore. For HTML4 browsers it will revert back to using the old onhashchange functionality.
Fluxible
A pluggable container for isomorphic flux applications
Vis
Dynamic, browser-based visualization library
Rivets
Declarative data binding facility
When
A solid, fast Promises/A+ and when() implementation, plus other async goodies.
Csso
CSS-optimizer
Node Decorators
node-decorators
Supermodel
Supermodel - Minimal Model Tracking for Backbonejs
Portal Vue
A Portal Component for Vuejs, for rendering DOM outside of a component, anywhere in the document.
Winjs
WinJS project by Microsoft Open Technologies