Many editions of the Greek New Testament include an “apparatus.” This is a list of which witnesses support different variant readings for a given passage. Because there are so many witnesses, every edition of the Greek New Testament Text published to date is highly selective.
Complete apparatuses have only been prepared for several small sections of the New Testament text. Several other partial but significant apparatuses are also listed.
- Luke (partial): The most complete apparatus presently available is found in The Gospel According to St Luke, Edited by the American and British Committees of the International Greek New Testament Project, Part One. Chapters 1-12. Oxford University Press, 1984. Part Two. Chapters 13-24. Oxford University Press, 1987.
- John 18: Bruce Morrill collated all manuscripts of John 18 as part of his Ph.D. thesis, freely available here.
- Philemon: S. Matthew Solomon collated all manuscripts of Philemon as part of his Ph.D. thesis, which does not appear to be freely available but can be purchased on ProQuest.
- I Peter (partial): The most complete published partial apparatus is the Novum Testamentum Graecum Editio Critica Maior IV (ECM), published by the editors of the Nestle-Aland text. It can be purchased here.
- II Peter (partial): The ECM is the most complete published partial apparatus.
- I John (partial): The ECM is the most complete published partial apparatus.
- II John (partial): The ECM is the most complete published partial apparatus.
- III John (partial): The ECM is the most complete published partial apparatus.
- Jude: Tommy Wassermann collated all manuscripts of Jude for an apparatus published in The Epistle of Jude: Its Text and Transmission (Stockholm: Almqvist & Wiksell, 2006). It can be purchased here.
For other passages, the most extensive apparatus available is quite possibly the Center for New Testament Textual Studies’ digital apparatus Logos module.
Another useful resource is Norman Simon Rodriguez’s GNT collations website. It collates all manuscripts from the K-Liste for which there is a transcription in the INTF site (about 600 manuscripts). The collations are all against the Robinson-Pierpont 2018 text.