- mime-types
The ultimate javascript content-type utility.
- 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
- axios
Promise based HTTP client for the browser and node.js
- request
Simplified HTTP request client.
- semver
The semantic version parser used by npm.
- lodash
Lodash modular utilities.
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
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