ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Xibo - Digital Signage for Everyone!
Chart.js - Easy, object oriented client side graphs for designers and developers.
Yodeck - Yodeck enables you to design and schedule your digital signage on Raspberry Pi easily from the web, using your computer, tablet or smartphone.
Backbone.js - Give your JS App some Backbone with Models, Views, Collections, and Events
TelemetryTV - Powerful and Intuitive Cloud-Based Digital Signage Software That Lets You Easily Manage Content on Screens