These five sites were built using Node.js (or they use it for production). Node.js has become a rather popular language for easily building fast, scalable network applications. Lets go through these examples and draw inspiration at the same time.
5 Great looking and Useful sites built using Node.js
A community for young makers to learn new skills and make awesome friends.
Murally is an online whiteboard designed to visually organize ideas and collaborate in a playful way.
Use Node.js, Express and Backbone.js for a data visualization and analytics web app.
Its for testing all browsers in your browser.
Used by musicians to share music, videos, photos, touring schedule and more with their fans.