- async
Higher-order functions and common patterns for asynchronous code
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
- mongodb
The official MongoDB driver for Node.js
- postcss
- cheerio
Tiny, fast, and elegant implementation of core jQuery designed specifically for the server
- qs
A querystring parser that supports nesting and arrays, with a depth limit
- crypto
- readable-stream
Streams3, a user-land copy of the stream library from Node.js
- moment
Parse, validate, manipulate, and display dates
- Best plugins for Eclipse