I know nothing about what text(s) the Orthodox church is using, but at
you can find "A complete electronic edition of the Original Patriarchal text of the Greek New Testament, for WINDOWS, as it is used by the Greek Orhodox Church".
I have created a BW database. It seems to be a Textus Receptus type of text, but it does not agree completely with any of the texts already in BW. Perhaps some knowledgable person can tell us more about this text?