http://quickbms.aluigi.org
http://aluigi.org/papers.htm#others-file
I guess I have (probably) the biggest collection of files extractors, all open source.
Other than the quickbms scripts there are also standalone tools like fsbext, ttarchext, msmixext and many others.
There are also various resources related to other fields like game security in the Advisories page.
Oh well, if you are in this forum probably you already know my website and my stuff
P.S.: in case of problems there is a (not-updated) mirror here: http://mirror.aluigi.org