Is there any free Linux OS for a ThinClient?

What is Windows Thin client?

A Windows thin client is an efficient, cost-effective endpoint device that is able to offset many of its computational processes to a server. These devices achieve their computing needs through a network connection to a central server.

Under the Remote tab, click "Allow remote access to your computer" dialog to enable remote access. Also, click the Select Users radio button, and in the Remote Desktop Users dialog box, click Add. Then, enter the location and user name of the PC you want to be able access this remote system.

Zero client, also known as ultrathin client, is a server-based computing model in which the end user's computing device has no local storage. A zero client can be contrasted with a thin client, which retains the operating system and each device's specific configuration settings in flash memory.