Superagent
Ajax with less suck - (and node.js HTTP client to match)
Grapnel.js
A simple, lightweight library making it easy to create routes or run events based on a specific URL hashtag.
Redux Loop
A port of elm-effects and the Elm Architecture to Redux that allows you to sequence your effects naturally and purely by returning them from your reducers.
Page.js
Micro client-side router inspired by the Express router (~1200 bytes)
Amplify
AmplifyJS is a set of components for data management and application communication.
React Native Web
React Native for Web
Backbone React Component
A bit of nifty glue that automatically plugs your Backbone models and collections into your React components, on the browser and server
Node Decorators
node-decorators
Bottlejs
A powerful, extensible dependency injection micro container for JavaScript applications
Lodash
An alternative to Underscore.js, delivering consistency, customization, performance, and extra features.
Rx Js
The Reactive Extensions for JavaScript
Alertify.js
JavaScript Alert/Notification System
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
Speakingurl
Generate of so called "static" or "nice-looking" or "slug" or "SpeakingURL" from a string.
Steal
Gets JavaScript
Jquery Timeago
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").
Raven Js
JavaScript client for Sentry