Remote Access
JoinMe (Free for Windows, Mac & mobile — no registration)
TeamViewer (Free for home users)
Simple to use. Requires someone to be at the remote computer.
LogMeIn (Free for individuals)
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