Creator here. I created this app to visualize what is going on on the Ripple Network (kind of a blockchain, called 'ledger') in real-time. The application is written in Elixir/JavaScript, the client uses SVG (d3.js) and mostly css-transitions for visualization. Data is fetched from a public ripple validator using web-sockets, pre-processed server-side and finally broadcasted to the clients.
What you see, are validated transactions (TXs) between addresses. A TX always contains at least one address but can contain multiple (e.g. payment targets, but many more). These TX are not necessarily connected the XRP crypto-asset. The Ripple Network can be used without an asset as a messaging platform.
Check it out and enjoy. You can btw click on nodes to explore them. If you have any feedback or suggestions feel free to comment!