Full featured Promises/A+ implementation with exceptionally good performance
fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as mkdir -p, cp -r, and rm -rf.
small debugging utility
Streams3, a user-land copy of the stream library from Node.js
Tiny, fast, and elegant implementation of core jQuery designed specifically for the server
yargs the modern, pirate-themed, successor to optimist.
Recursively mkdir, like `mkdir -p`
A logger for just about everything.
Promise based HTTP client for the browser and node.js