OSNews often reports on small and hobby operating systems. Here is a list for you to vote for the one with the right amount of technical and wider success potential for a bright future.
Permalink for comment
To read all comments associated with this story, please click here.
What about Fiasco?
http://os.inf.tu-dresden.de/fiasco/
There is also Fiasco-based JourneyOS:
http://journeyos.sourceforge.net/