- fs
- readable-stream
Streams3, a user-land copy of the stream library from Node.js
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
- mime-types
The ultimate javascript content-type utility.
- async
Higher-order functions and common patterns for asynchronous code
- mocha
simple, flexible, fun test framework
- cheerio
Tiny, fast, and elegant implementation of core jQuery designed specifically for the server
- axios
Promise based HTTP client for the browser and node.js
- winston
A logger for just about everything.
- Top plugins for WebStorm