ReactOS and RoboLinux are OSes designed to be Windows substitutes. ReactOS currently has limited hardware support and Robolinux's Windows-like support involves creating a Windows virtual machine. Support for ReactOS would be especially helpful since it currently doesn't support a wide array of hardware and is most successfully installed in virtual machines, which I believe makes it an excellent choice for a cloud operating system. I personally would like to use it to create a Terraria game server so that I can play Terraria with my significant other who recently moved to another city. I will investigate accomplishing the same with WINE, but WINE can be messy.