NeoRouter Another Possible VPN

NeoRouter Free Portable Remote Desktop | Portable USB Pen Drive Applications
NeoRouter Free Portable is a Freeware Remote Desktop Client created by NeoRouter Inc. It can be used for Remote Desktop, Folder Sharing, Printer Sharing, Chat and more. It supports Windows, Linux, and Mac computers.

Share Files Over Internet

FeelHome new to try for sharing files.

LogMeIn Express (Screen Sharing)

LogMeIn Express
This is not what I'm looking for as a free option to desktop sharing.

Remotely Control Another Computer

Crossloop is one answer to controlling someone's desktop from your computer. The free version is illusive but can be found on the bottom of this page currently. How-To Geek has an explanation here. File transfer was available last time I used it.

TeamViewer works also but do not install. The user may mistakenly say yes to commercial use and their IP becomes blocked to TeamViewer. Not needs installing for TeamViewer to work.

Comodo Unite is a free VPN

Logmein is great

Ammyy no install client

Here are four options to remote desktop. It shows TV as the only one working in Win7. Not sure if true.

Another list of programs