- mkdirp
Recursively mkdir, like `mkdir -p`
- superagent
elegant & feature rich browser / node HTTP with a fluent API
- mocha
simple, flexible, fun test framework
- rimraf
A deep deletion module for node (like `rm -rf`)
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
- bluebird
Full featured Promises/A+ implementation with exceptionally good performance
- crypto
- debug
small debugging utility
- body-parser
Node.js body parsing middleware
- Top 12 Jupyter Notebook extensions