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A very powerful command-line program to easily create scalable network applications

editor's review




Node.js is an open source and completely free software that empowers web developers to build scalable and fast network programs. Being based on Chrome's JavaScript runtime, the Node.js software is extremely efficient and lightweight, especially because it uses a non-blocking, event-driven I/O model.

The top platform for running server-side JavaScript code

Node.js is currently considered the top platform for running server-side JavaScript code, being used in production in big companies like Google, eBay, Yahoo, LinkedIn, Microsoft, Cloud9 and many more.

Mandatory example

The following code will create a simple web server that responds with "Hello World" for every request.

var http = require('http');

http.createServer(function (req, res) {

res.writeHead(200, {'Content-Type': 'text/plain'});

res.end('Hello World\n');

}).listen(1337, '');

console.log('Server running at');

In order to run the HTTP server, you will have to the code above into a file called “example.js” (without quotes) and execute it with the node command from a terminal emulator:

% node example.js

Server running at

Supported operating systems

Node.js is a multi-platform application that has been successfully tested under numerous GNU/Linux distributions, including Debian, Ubuntu, Arch Linux, Fedora, Red Hat Enterprise Linux, openSUSE, Mageia, Slackware, and others, as well as on the commercial Mac OS X and Microsoft Windows operating systems. Both 64-bit and 32-bit instruction set architectures are supported at this time.

Under the hood, requirements and availability

As mentioned, this is a multi-platform software. It can be downloaded as pre-built installers for the Mac OS X, GNU/Linux and Microsoft Windows operating systems, as well as a universal source archive that can be compiled and installed on virtually any operating system where Python is supported.

Node.js was reviewed by
Last updated on June 25th, 2015
Node.js - This simple web server written in Node responds with "Hello World" for every request.Node.js - Command-line usage example of Node.js

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