- mkdirp
Recursively mkdir, like `mkdir -p`
- debug
small debugging utility
- mime-types
The ultimate javascript content-type utility.
- path
- qs
A querystring parser that supports nesting and arrays, with a depth limit
- readable-stream
Streams3, a user-land copy of the stream library from Node.js
- ms
Tiny millisecond conversion utility
- body-parser
Node.js body parsing middleware
- moment
Parse, validate, manipulate, and display dates
- Top 12 Jupyter Notebook extensions