Handlebars.js
Handlebars provides the power necessary to let you build semantic templates effectively with no frustration. An extension to the Mustache templating language created by Chris Wanstrath.
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.
Mousetrap
Simple library for handling keyboard shortcuts in Javascript
Durandal
A cross-device, cross-platform client framework written in JavaScript and designed to make building Single Page Applications (SPAs) easy to create and maintain.
Sails
Realtime MVC Framework for Node.js
Machina.js
js ex machina - finite state machines in JavaScript
Loopback
LoopBack makes it easy to build modern applications that require complex integrations.
Platform.js
A platform detection library that works on nearly all JavaScript platforms.
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Uranium
Universal css-in-js media queries for React Native and React
Aurelia Framework
The aurelia framework brings together all the required core aurelia libraries into a ready-to-go application-building platform.
Sticky Kit
A jQuery plugin for creating smart sticky elements
Stampit
Create objects from reusable, composable behaviors.
Ripple
A tiny foundation for building reactive views
Mustache.js
Minimal templating with {{mustaches}} in JavaScript
Page.js
Micro client-side router inspired by the Express router (~1200 bytes)