I have a browser/Node.js application that I worked on for several years that is a browser based peer-to-peer file system sharing tool. The application is massive in size, but its easy to tinker with, the build takes about 8 seconds, and the test automation is decent enough for anybody interested to get started. The idea is to invert the transmission model of the web from anonymous connections towards a server instead to trusted connections between owned computers and even restricted connections to different users (and their various devices) all in real time using sockets and streams and a tiered distribution model. https://github.com/prettydiff/share-file-systems

I am currently working on a web server application that allows spinning up many different web servers quickly and a monitoring dashboard that shows the various servers, their connected sockets, port management, and various other things. This all started with the idea that you can proxy and redirect anything super efficiently where a proxy in Node.js is as simple as:

    proxy.pipe(socket);socket.pipe(proxy);