RealVNC, a multi-platform software which allows you to access computers anywhere in the world, given that they have VNC server installed and configured. It's a great tool for people who want to access their home computers from work or vice versa, or for people who need to administer different computers in the network in a workplace.
Setting up RealVNC is -really- simple. Download it here to start with.
In the setup, check VNC Server for the computers you want to be connected to, and VNC Viewer for the computers you want to connect from. (You can leave it as default, it would be just fine.)
After you install the software, you'll see...
