LogMeIn – Desktop sharing tool. Very efficient for remote support and training.
VNC – Alternative software to LogMeIn.
NetMeeting – Alternative software to LogMeIn.
Windows Live Messenger - – Instant message tool often used to offer support in a closer way giving the user an extra level of attention.
Skype – VOIP tool and Instant message. – Allows phone calls at extremely low or no cost over the internet.
GoogleTalk – Alternative software to Skype and Live Messenger.