Terminal string styling done right
the complete solution for node.js command-line programs
yargs the modern, pirate-themed, successor to optimist.
Streams3, a user-land copy of the stream library from Node.js
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
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.