Amethyst WebSockets
The complete, production-ready WebSocket server
How It's Done
What is Amethyst?
Amethyst is a custom-built websocket server built for Node.js.
By custom-built, we mean that it has been built with as much attention to detail as possible, enabling ease of use and customizability!
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What does it have?
For starters, you have a lot more control over it than your own hastily-made script, so you can rest assured that your server is safe.
In case you're still curious about the entire list, you should click below.
Features

What are WebSockets?
To tell you the truth, it's complicated, but at the end of the day, it is a standard mechanism of browsers that enables things like chat and games on the internet!
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How much is it?
Its free. Amethyst is an open source project, so you can try it out today without paying anything!
Open Source Information