ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Framer - 🔥 Design real websites right on the canvas.

Chart.js - Easy, object oriented client side graphs for designers and developers.

MontageJS - MontageJS framework is a platform to develop and create single page applications (which load single HTML page and dynamically update the app as the user puts in inputs or requests or interacts with the page.) with ease.

Backbone.js - Give your JS App some Backbone with Models, Views, Collections, and Events

Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.