I recently found a nice, unobtrusive, free “Live Chat” widget that can be installed on almost any site. It’s called Tawk.to and you can see an example on my site. You can use it to monitor website visitors in real time, optionally initiate a chat with them, monitor your support staff chats, and more. I’m using the free version, but you can also upgrade to remove the branding.
Learn more: www.tawk.to