WinRS is the Windows Remote Shell. With WinRS, you can query remote Windows machines that are running WinRM. However, keep in mind that your machine also needs to be running WinRM to use WinRS. As you can see from the diagram below, winrs is a full featured command line tool with a great deal of help information available for it. One of the most common uses for WinRS is to execute commands on a remote system. Of course this is communicated using the HTTP protocol / port 80 (by default).