Parse, validate, manipulate, and display dates
Loads environment variables from .env file
A querystring parser that supports nesting and arrays, with a depth limit
parse argument options
the complete solution for node.js command-line programs
Express style path to RegExp utility
Terminal string styling done right
simple, flexible, fun test framework
Higher-order functions and common patterns for asynchronous code
resolve like require.resolve() on behalf of files asynchronously and synchronously
elegant & feature rich browser / node HTTP with a fluent API
Wrapper around libsass
fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.
Portable Unix shell commands for Node.js
Full featured Promises/A+ implementation with exceptionally good performance
Node's event emitter for all engines.
yargs the modern, pirate-themed, successor to optimist.