I think it's the first ever tool of it's kind.
It uses decompiled sources from Eveem.org API (e.g. http://eveem.org/code/0x06012c8cf97bead5deae237070f9587f8e7a... ), and using simple analytics on top of if, checks which other addresses are referenced by a given smart contract.
For CryptoKitties, it finds all the ceo/coo/cxo, and all the libraries linked through sources, plus information on who can change those links - e.g. that only ceo can change coo, and only cfo can withdraw money.
It took just a few hours to build it using Eveem's API, and you can check out how it's done here: https://github.com/kolinko/showmewhatyougot