small debugging utility
fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as mkdir -p, cp -r, and rm -rf.
Streams3, a user-land copy of the stream library from Node.js
Promise based HTTP client for the browser and node.js
yargs the modern, pirate-themed, successor to optimist.
simple, flexible, fun test framework
The official MongoDB driver for Node.js
A library for promises (CommonJS/Promises/A,B,D)