The WikiLeaks "Cablegate" viewer is now online:
http://cablegate.wikileaks.org/
According to the site description, the cables will be released in stages over the next few months: "The subject matter of these cables is of such importance, and the geographical spread so broad, that to do otherwise would not do this material justice."
OWNI's application is also live:
http://statelogs.owni.fr/