The spec for iBeacon is proprietary and the name is trademarked (http://tmsearch.uspto.gov/bin/showfield?f=doc&state=4803:h5e...).

IIRC, Apple even went so far as to revoke iBeacon usage from companies that tried to make an Android library (Radius Networks, the creators of this spec, being one of them).

I think these guys had a bunch of ibeacon utilities for ios and osx, as well as detailed docs on the protocol online, but they were recently pulled, at least from homebrew. Did Apple intervene?