- moment
Parse, validate, manipulate, and display dates
- handlebars
Handlebars provides the power necessary to let you build semantic templates effectively with no frustration
- js-yaml
YAML 1.2 parser and serializer
- through2
A tiny wrapper around Node.js streams.Transform (Streams2/3) to avoid explicit subclassing noise
- cheerio
Tiny, fast, and elegant implementation of core jQuery designed specifically for the server
- async
Higher-order functions and common patterns for asynchronous code
- bluebird
Full featured Promises/A+ implementation with exceptionally good performance
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
- rimraf
A deep deletion module for node (like `rm -rf`)
- Top 12 Jupyter Notebook extensions