Yeah using sockets, I can show you an example of an application I built on my site bluematter.io it's still a prototype, but contact me if you want to check it out. I still need to set it up so I am notified when a user is trying to chat with me.

I have spent a long time developing the chat to make it fast and effective. I am available for hire if you need someone to develop the technology for you!

PS. To chat just click the circle that appears to the right, then click signup under the login form, quickly sign up and you will get an automated message, I will be able to respond back when I see you have logged in and we can communicate in real time.