UltraVNC is fast, stable and very powerful, as well as having a very minimalistic interface that helps us to use it and allow us to work remotely from any PC almost as if we were working directly on it. With this software we will see the computer's desktop as if we were in front of it.
UltraVNC or uVNC works on many systems and includes in this download both the client and the server, therefore, we only have to install the server on the computers that we want to control. It's even compatible with the UAC or User Account Control incorporated by the latest Windows systems and is capable of controlling both Linux and Mac computers.
Of course, UltraVNC allows us to encrypt the connections and we can download certain drivers that will optimize how it works and to guarantee that the remote connections are as optimal as possible.