Express
Fast, unopinionated, minimalist web framework for Node.js
Web Applications
Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.
APIs
With a myriad of HTTP utility methods and middleware at your disposal, creating a robust API is quick and easy.
Performance
Express provides a thin layer of fundamental web application features, without obscuring Node.js features that you know and love.
Frameworks
Many popular frameworks are based on Express.
Install
$ npm install express --save
Official expressjs.com