RealVNC is a company that provides remote access software. The software consists of a server and client application for the Virtual Network Computing (VNC) protocol to control another computer's screen remotely.
RealVNC comes complete with both server and client, so you can install everything you need in one package. With this tool you can handle remote administration without having to worry about third-party tools. And with the enterprise-level application, you can also chat with your end user so you don't have to tie up the phone while trying to administer support to a client.