Are there any socket.io projects/applications used in production?
I just wonder because I want to use it for a huge project, and I did not find any articles about companies/projects using socket.io.
we've used socket.io for faster UI updates with (financial) price information in production. It does its job on the client side. There is more load on the server side (as opposed to just AJAX which is understandable) - one needs to set up/configure flash sockets if you wish to use it as a fallback. Most browsers will fall back and not use web sockets (unless they are using chrome).