URL strings

The semantic version parser used by npm.

small debugging utility

the complete solution for node.js command-line programs

ECMAScript parser

yargs the modern, pirate-themed, successor to optimist.

Another JSON Schema Validator

Tool for transforming styles with JS plugins

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.

a little globber

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js