JavaScript Q/A

Node.js is freely available to the public for use. User's and other developers can modify and redistribute Node.js application as they sees fit. It Also Developed as a public, open collaboration and made freely available to the public.

Node.js is a  open-source  cross-platform   JavaScript run-time environment  build on google chrome's JavaScript engine(V8)  for developing server site application.  Node.js = Runtime Environment + JavaScript Library Node.js uses an asynchronous event driven  non-blocking I/O model that makes it light weight, efficient and perfect for data-intensive real time application that runs on distributed devices.