Since 31-01-2014 CrossLoop isn't available anymore.
We used this a lot to give support to our technicians in the field.
For us it was a perfect, and free, solution to take over their laptop while they could still see what was being done so they might learn from it for the next time.
We are now looking for a, preferably free, alternative for CrossLoop.
The functionalities we are looking for are:
Works with Windows 7 (and maybe Windows XP as well)
completely take over remote laptop
works via GPRS connection (laptop)
dual view: the laptop owner has to be able to see what is being done
free, or very low cost
Google gives quite some alternatives, but most of them cost quite a lot, and I am also interested in personal experiences before we start using any of the tools extensively