During the day, we often have to connect to friend's computers to do repairs, and this is easily one of the best out there, and best of all, it's free for non-commercial use. We have been able to steer even the most novice PC user to the TeamViewer website to download the Quick Support version and have them give us their nine-digit id and password. It's fast, secure, and what else can we say? We love it.
Desktop sharing has never been easier: With TeamViewer, you will be able to connect to the desktop of a partner anywhere on the Internet.
TeamViewer also works in the other direction: Show your desktop to a partner over the Internet and illustrate your developed software, presentations, or solutions. All applications are in one single, very affordable module. This is the complete TeamViewer with an install/uninstall support.