Fellows

The Great Commentary of Cornelius à Lapide
The celebrated Jesuit commentary upon Scripture, in English — à Lapide gathers the Fathers, the doctors, and the whole Catholic tradition verse by verse.

Migne.app · see also Acta Sanctorum · St. Bonaventure · St. Ambrose · Topographia Sacra · Douay-Rheims with the Glossa Ordinaria
A labor after this library’s own heart: every column of Migne’s Patrologia Latina and Graeca, readable and citable — and, work by work, in English for the first time — with a new English Acta Sanctorum by the calendar of the saints, first translations of the Opera Omnia of St. Bonaventure and of St. Ambrose on Psalm 118, Topographia Sacra, geographical editions of the place-heavy books of Scripture with maps and gazetteer, and the Douay-Rheims set verse by verse beside the Glossa ordinaria, the commentary a medieval reader met in the margin of the page. All of these derive from Wrootpress.

Schola Thomistica
A companion to this library, laboring to present the entire scholastic tradition — its masters, its methods, and its texts.

The Catechumen
Another friend of this library, modern day master controversialist — Martin Becanus’s Manual of Controversies and Francisco Suárez on grace, rendered into English, with many more masterpieces to come.

The Translations of Osvaldo
A companion to this Library, translating the great scholastics at astonishing range — Suárez’s Metaphysical Disputations and Summa commentaries, Palmieri On the Roman Pontiff, Jugie’s Byzantine Schism, Petavius on the Procession of the Holy Spirit, the Carmelite and Salamancan philosophy courses, Perrone, and Billot’s dogmatic manuals.

Academia Augustiniana · see also excerpts on Substack
A library for the Augustinian school as this one is for the commentators — the writings and translations of the Augustinian tradition across the centuries: Giles of Rome, Gregory of Rimini, Seripando, Cardinal Noris, Bellelli, Lafosse’s Augustine the Theologian, and Berti’s Theological Disciplines entire.

Thomisticae
A fellow laborer in the Thomist school, whose editions and translations are kept freely on the Internet Archive — the Manual of the Thomists, Bellarmine Vindicated, and a case for the beatification of Fr. Francisco Suárez among them.

Hesi
Another friend of this library, translating the mystical theology of the Thomist school — Vallgornera’s Mystical Theology of St. Thomas on prayer, and Cardinal Cajetan’s commentary on Romans.

Scholastic Pooda
A fellow laborer translating from the Counter-Reformation — select works of the greatest theologians of that era, offered to help Protestants see the truth of the Catholic claims on the contested questions.

Admirator Cartusiensium
A fellow laborer, an admirer of the Carthusians — offering choice excerpts in English from works like those on these shelves.

None below are affiliated with this site; we simply commend them.

Douay-Rheims Bible Online
The Douay-Rheims Bible with the Challoner notes, searchable, alongside the Vulgate.

TheDouayRheims.com
The Douay-Rheims text in a clean modern reader.

Haydock Commentary
Fr. George Leo Haydock’s celebrated Catholic commentary on the Douay-Rheims Bible, verse by verse, free to read.

Catena Bible
The commentary of the Fathers arranged verse by verse upon the whole of Scripture, in the manner of the ancient catenae.

New Advent — Fathers of the Church
The great free collection of the Church Fathers in English (the Schaff translations) — Augustine, Chrysostom, Jerome, and hundreds more, with the Summa and the Catholic Encyclopedia besides.

The Tertullian Project — Early Church Fathers, Additional Texts · see also the complete Fathers series
A labor much like this library’s own: patristic works translated into English for the first time and given away freely.

Christian Classics Ethereal Library — the Fathers
Philip Schaff’s Ante-Nicene, Nicene, and Post-Nicene Fathers series, complete and searchable.

Catholic Cross Reference — Fathers Search
Search the Church Fathers by chapter and verse — every place the early Church cited a given passage of Scripture, gathered in an instant.

Patristica.net
The Scriptures in their original tongues and the Vulgate, Migne’s Patrologia Latina and Graeca volume by volume, and the councils and papal documents in the great collections — Labbé, Mansi, and Denzinger — free to read and download.

Corpus Córporum (University of Zurich)
A vast searchable corpus of Latin texts — the Patrologia Latina re-edited digitally, with dictionaries at hand and the whole library queryable word by word.

Patrologia Latina Database (ARTFL, University of Chicago)
The full text of Migne’s Patrologia Latina under the PhiloLogic search engine — all the Latin Fathers queryable word by word, with concordances and collocations at hand.

The Aquinas Institute — aquinas.cc · see also the Institute
The Opera Omnia of St. Thomas Aquinas in parallel Latin and English — the commentaries on Scripture and Aristotle alongside the Summa.

Corpus Thomisticum
The complete works of St. Thomas in the original Latin, critically presented, with the Index Thomisticus.

Ite ad Thomam
A scholar’s home for traditional Thomism — studies, resources, and the celebrated Out-of-Print Library of the old theology manuals.

Augustinus.cc
The works of St. Augustine in parallel Latin and English — the Confessions and more, in the manner of aquinas.cc.

Papal Encyclicals Online
The encyclicals, bulls, and councils of the popes, from the early Church to the present.

Biblia Clerus
From the Congregation for the Clergy: Scripture with the commentaries of the Fathers, Doctors, and the Magisterium joined to it.

Documenta Catholica Omnia
An immense archive of the Church’s documents in their original tongues — Migne’s Patrologia, councils, popes, and doctors.

Ipsissima Verba
The collected projects of Fr. Dylan Schrader — liturgical texts, translations, and scholarly helps for the Church’s worship and study.

CatholicLibrary.org
Thousands of works and hundreds of thousands of pages — Scripture, Fathers, Doctors, and the Magisterium, ordered by era, author, and subject.

Isidore.co · see also a library of great older works · the Calibre library
A quiet library of Catholic books and translations — scholastic commentaries, manuals, and rarities gathered in one place.

Internet History Sourcebooks (Fordham)
Fordham’s vast scholarly collection of medieval and early modern sources in English translation.

Post-Reformation Digital Library
A scholarly index of early modern theological sources — Catholic and Protestant alike — pointing to digitized originals across the world’s libraries.

Gloss-e — the glossed Latin Bible
The medieval Bible with its glosses, edited by the CNRS: eight corpora — the Glossa ordinaria, media, and magna, Hugh of St. Cher, Philip the Chancellor, the Catena aurea, and Nicholas of Lyra with the additions of Paul of Burgos. The Latin is cleanly set and can be copied straight from the page; the site’s own matter is French.

eCatholic2000
A broad free shelf of Catholic classics — catechisms, spiritual works, encyclicals, and commentaries in plain text.

Catholic eBooks Project
A great catalog of free Catholic books in digital form, ordered by subject — a signpost to public-domain treasures across the web.

Saints’ Works
The writings of the saints themselves, gathered for free reading and download.

Traditional Catholic — Free Books
A broad shelf of free traditional Catholic books in digital form.

Fish Eaters — Catholic Library
A library of Catholic classics gathered for the traditional faithful.

JesusMarie.com — 2,000 free books of the saints (in French)
A great French library, free to read and download: the Doctors and Fathers of the Church, the Summa of St. Thomas, the whole Dictionnaire de Théologie Catholique letter by letter, the Bibles of Fillion, Vigouroux, Crampon, Calmet, and Le Maistre de Sacy, and its own Bible de Rome, with a verse-by-verse commentary on all seventy-three books.

Divinum Officium
The Divine Office of the Roman rite, day by day and hour by hour, in Latin and English side by side — Matins through Compline in the breviary as it stood at any point from St. Pius V to 1960, with the Missal and the Ordo beside it.

Attalus — Greek and Latin authors in translation
An alphabetical list of the Greek and Latin authors of antiquity — chiefly the pagans whom our commentators quote at every turn — with a link, work by work, to an English translation wherever one can be had freely.

CatholicApologetics.info
A wide archive of apologetical, catechetical, and historical texts gathered for free reading. A caution: the site supports the Society of St. Pius X, a position this library does not share — we commend the texts, not the cause.

HistoricalChristian.Faith
The Fathers and the early councils gathered by author and by year, from Clement of Rome onward, freely readable and searchable. A caution: the site is Protestant, and its “Doctrine Across Time” pages weigh the Catholic doctrines and pass verdicts of their own — we commend the writings of the Fathers, not the judgments laid upon them.

Fourth-Century Christianity
The fourth century in its own documents: the acts and letters of Nicaea in Greek and English, ten ancient historians of the council set side by side, the whole dossier of the Arian controversy, the Melitian schism, the quarrel over the date of Easter, and the movements of the emperors. A caution: the site is kept by a Lutheran college, though what it chiefly offers is the ancient documents themselves.

Reformed Books Online — the commentaries
A vast finding aid to the commentators on Scripture, book by book and chapter by chapter, with a link to each — and, in its Latin sections, the Catholic commentaries on the whole Bible, on the Old Testament and the New, and on every single book. A caution: the site is Reformed, and much of what it recommends is Protestant — we commend its signposts to the old Latin commentators, not the judgments set beside them.