I have used the Remote Assistance feature of XP/Vista/Windows 7 many times,
which is not the same as Remote Desktop. It meets the first four criteria,
below. Although it isn't Open Source, it is built into Windows OSes, and so
doesn't require installing additional software.
Just another option for Windows users.
> 1) no messing with IP or hard steps for the client
> 2) the client can SEE what you're doing, so you can show them how
> something is done, and use it for training
> 3) no logging in, the client initiates the connection to the tech, the
> tech accepts or denies, the tech doesnt have to run the client unless
> they are on the phone and are instructing someone to initiate the
> 4) its safer because there is no server running 24/7 (or when the
> computer is on) on the clients machine
> 5) Its open source!