I have considered making something like VoxWav for Windows but I have simply not had the time to do it. Since you can run VoxCommando on a Windows PC anyway it is not a huge priority although I can see how it would be handy in some cases.
In the case of these tiny computers or Windows 8.1 running on a tablet etc. just be careful that they actually run the full Windows 8.1 OS and not the RT version.