I came across this some time ago and occasionally make use of it... apart from PROIEL I can't think of a Koinē NT equivalent that really comes close:http://corpus.quran.com/
What's especialy remarkable, is that it seems to be the work mainly of one person (see connected blog).
All the "bits" are out there but it would be nice to have a site of comparable accessibility and comprehensiveness for the NT. He has multiple recorded readings too. What about Modern, Reconstructed and Erasmian?