My current project requires the transcription of large slabs of text, specifically Magisterial documents of the Catholic Church. I recently discovered a French website, catho.org which has the 1917 Code of Canon Law in Latin and French as well as the 1996 edition of Denzinger's Dogma. So I was able to save myself typing out DS 1247-1279 (the questions to be posed to those accused of the Hussite or Wycliffite heresies, decreed by the Council Of Constance 22nd February 1418). Also Catho.org gives the older paragraph numbers of Denzinger right next to the current number. This is useful for using pre-1963 works of theology. From the home page you navigate to the French versions but there is a little button ("Latin" hand written with a mouse it looks like) to switch to the original. It does not provide the Greek texts of the early councils. Also it only provides French texts of the Fathers. Clicking on the pair of blue semi-circular arrows (looks like a refresh button) within a given text takes you to citations of the passage which you are reading. As they say on the home page:
Un système UNIQUE AU MONDE, issu de la technologie exclusive du logiciel Ictus, permet de savoir immédiatement où un document est cité. Ainsi, vous découvrirez comment les Pères de l'Église commentent un passage des Saintes Écritures, ou bien comment un texte du Magistère (concile, encyclique) est utilisé par un autre document. … Grâce à Internet et aux techniques les plus modernes appliquées à ce trésor de textes, ayez l'érudition d'un vrai moine!
Meanwhile I am agog at developments on Newman Reader. Although they have adopted a rather odd looking font (looks like Papyrus) for the front page we can forgive all that because they have put PDF scans of all 32 volumes of Newman's Letters and Diaries (it would cost thousands to assemble a collection of printed copies) as well as of modern collections of Newman's miscellaneous papers. They seem to have done an OCR job on it so the text is searchable, at any rate it is as searchable as something on Google books (presumably Google did the work, since "snippet view" and "preview" versions of L&D are available on Google books). I cannot find Newman's preface to Hutton's Anglican Ministry, but I just gave you that. Nor is there the full version of his ejaculation in favour of the Papacy beginning "Deeply do I feel…"
Last, but not least, (via Chant Café) the complete four volume Missale Romanum cum lectionibus is now online. Each volume is split into four files. They take an age to download. They have been gone through a first run with optical character recognition so you can copy and paste up to a point. It is not very accurate however. But it is better than nothing. Much better.