Render Nodes Manager allows user to remotely start / restart / stop VRaySpawner on all servers / nodes.
It uses Windows Remote Desktop connection. There is no need to install any server software.
It is only beta version. Tested on Windows 7 Professional and Ultimate.
Please try and let me know what you think, about bugs etc.
-Windows 7 Professional or Ultimate (doesn't work on Windows Home - this version of Windows does not support Remote Desktop)
-.NET Framework 3.5 or later