- async
Higher-order functions and common patterns for asynchronous code
- body-parser
Node.js body parsing middleware
- glob
a little globber
- js-yaml
YAML 1.2 parser and serializer
- mkdirp
Recursively mkdir, like `mkdir -p`
- winston
A logger for just about everything.
- node-fetch
A light-weight module that brings window.fetch to node.js
- q
A library for promises (CommonJS/Promises/A,B,D)
- debug
small debugging utility
- Top 12 Jupyter Notebook extensions