Angular.js
AngularJS lets you write client-side web applications as if you had a smarter browser. It lets use good old HTML (or HAML, Jade and friends!) as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly
Ember
Ember.js is a JavaScript framework that does all of the heavy lifting that you'd normally have to do by hand. There are tasks that are common to every web app; Ember.js does those things for you, so you can focus on building killer features and UI.
Sequelize
An easy-to-use multi SQL dialect ORM for Node.js
Phaser
Phaser is a light-weight 2D game framework for making HTML5 games for desktop and mobile browsers
Js Pdf
Generate PDF files in JavaScript. HTML5 FTW.
Parcel
📦🚀 Blazing fast, zero configuration web application bundler
Express
Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Incubator Echarts
A powerful, interactive charting and visualization library for browser
Lodash
An alternative to Underscore.js, delivering consistency, customization, performance, and extra features.
Ace
Ajax.org Cloud9 Editor
Webpack
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.
Yarn
Fast, reliable, and secure dependency management.
Slate
A completely customizable framework for building rich text editors.
jQuery
jQuery JavaScript Library
Mocha
A simple, flexible, fun javascript test framework for node.js & the browser. (BDD, TDD, QUnit styles via interfaces)
Highlight.js
Javascript syntax highlighter
Uppy
The next open source file uploader for web browsers :dog: