What is it?
TightVNC is a VNC (Virtual Network Computing) Unix server and viewer. It is a remote display program that allows you to view the desktop of a remote computer from anywhere on a LAN or over the Internet. To improve security of sessions VNC can be piped through SSH (Secure SHell).
How to Install on Arch
To install TightVNC type the following:
pacman -S tightvnc
Now you need to set it up to work as either a server or client/viewer.