I think it's fair to say that haskell.org is the "official" website that has the involvement and implicit backing of the old-timers. Also the GHC compiler is h

I think it's fair to say that haskell.org is the "official" website that has the involvement and implicit backing of the old-timers. Also the GHC compiler is hosted on haskell.org. haskell-lang.org is the upstart. Whether it will last is an open question.