Remote Access

JoinMe (Free for Windows, Mac & mobile — no registration)

https://join.me

TeamViewer (Free for home users)

http://teamviewer.com

Simple to use. Requires someone to be at the remote computer.

LogMeIn (Free for individuals)

http://secure.logmein.com

Allows management of multiple remote computers.

No one needs to be at the remote computer if you have configured authentication to allow access.

Control a PC remotely with your iPad and TeamViewer

Thank you @sharonvak