This is a simple app I created with node.js and socket.io. It is live here. I manage this app on my server with pm2.
You have to [install Node.js] (https://nodejs.org/en/download/package-manager/#windows) and install MongoDB.
Use npm install from the root of this repo's directory.
Then from the terminal use the command: node app.js and point your browser at http://localhost:3000.