Cyanogens for windows is it available?

To think innovatively, is there any alternatives for windows other than th beautiful windows OS. I had HTC android phone which was running on ginger bread earlier. I had changes the OS to cyanogen OS. Oh my god I cannot believe how much happy I was when I succeeded in it. Now, I just got a thought, why cannot we have one similar to cyanogen for windows? What are the challenges and limitations? Has any organization already started working on it? Are products already available but only I am not aware of it? Share your opinions. Thanks you all.