Bibliotheca Catholica
Digital Libraries
The great Catholic digital libraries, archives, learning institutes, publishers, and homeschool programs.
- Vatican.va — The Holy See's official site — the primary source for papal and curial documents.
- Vatican News — Official news service of the Holy See.
- Vatican Apostolic Library — DigiVatLib — Digitized manuscripts of the Vatican Library.
- USCCB — U.S. Conference of Catholic Bishops: Bible, catechism, and liturgy.
- Catholic Culture Library — CatholicCulture.org’s document library: encyclicals and Church documents, the Fathers (Eerdmans edition), the Catechism, Fr. Hardon’s dictionary, and the Fr. William Most collection.
- LibriVox — Free public-domain audiobooks read by volunteers, including many Catholic classics.
- St. Isidore Forum e-book library (Calibre) — Thousands of Catholic e-books — the Calibre catalog this hub is built to complement.
- St. Isidore — raw Calibre folder index — Directory listing of every author folder in the isidore.co library.
- St. Isidore — simple (no-JS) catalog — Lightweight searchable list view of the isidore.co Calibre library.
- New Advent — Catholic Encyclopedia, Fathers, Summa, and Bible in one site.
- Christian Classics Ethereal Library (CCEL) — Thousands of public-domain Christian classics.
- Documenta Catholica Omnia — Massive multilingual archive of Catholic texts (PDF).
- EWTN Catholic Library — Church documents, saints, and spiritual classics.
- eCatholic2000 — Hundreds of public-domain Catholic books in HTML.
- Papal Encyclicals Online — Encyclicals, councils, and papal documents.
- Internet Archive — Millions of scanned books, including vast Catholic holdings.
- Project Gutenberg — Catholic Church bookshelf — Public-domain e-books on the Catholic Church.
- HathiTrust Digital Library — Millions of digitized volumes from research libraries.
- Newman Reader — The complete works of St. John Henry Newman.
- Josemaría Escrivá works — The Way, Furrow, The Forge, and homilies online.
- Fordham Internet Medieval Sourcebook — Primary sources for medieval history.
- The Latin Library — Latin texts from classical to Christian and neo-Latin.
- Thomistica.net — News and resources for Thomistic studies.
- Jesuit Online Library (Boston College) — Open-access Jesuit primary sources and scholarship.
- Franciscan Archive — Writings of Franciscan saints and theologians, incl. Bonaventure.
- Catholic News Archive — Digitized historic Catholic newspapers.
- Church Life Journal (Notre Dame) — Essays from the McGrath Institute for Church Life.
- Institute of Catholic Culture — Free lectures and courses in theology, history, and Scripture.
- Thomistic Institute — Dominican lectures and podcasts on philosophy and theology.
- Augustine Institute — Graduate school and FORMED streaming platform.
- FORMED — Catholic streaming: films, studies, audio, e-books.
- Word on Fire — Bishop Barron's media ministry: articles, films, Word on Fire Institute.
- Ignatius Press — Major orthodox Catholic publisher.
- TAN Books — Traditional Catholic classics.
- Sophia Institute Press — Catholic classics and contemporary works.
- Angelico Press — Catholic philosophy, theology, and literature.
- Catholic University of America Press — Academic theology, incl. the Fathers of the Church series.
- Emmaus Road Publishing — Scripture-centered publishing of the St. Paul Center.
- Ascension — Bible and Catechism in a Year, Great Adventure Bible studies.
- Seton Home Study School — Accredited Catholic K–12 homeschool curriculum and enrollment.
- Mother of Divine Grace School — Classical Catholic distance-learning program, K–12.
- Kolbe Academy — Classical Catholic homeschool and online school.
- Catholic Heritage Curricula — Gentle, affordable Catholic homeschool materials for young children.
- CatholicLibrary.org — Free full-text reading of the Fathers, Doctors, councils, and Scripture, with prayers and tradition texts.
- The Online Books Page (University of Pennsylvania) — A curated, copyright-checked index of free online books; browse by subject for Catholic titles.
- Jesuit Studies Digital Collection (Boston College) — Open-access books and sources on Jesuit history, spirituality, and education from the Portal to Jesuit Studies.
- Patrologia Graeca PDF index (Roger Pearse) — Volume-by-volume links to free scans of Migne’s Patrologia Graeca for the Greek Fathers.
- Biblioteca Electrónica Cristiana (multimedios.org) — Spanish-language Catholic library of classics, catechesis, and Church documents.
- Catholic eBooks Project — A small, curated index of legal, free Catholic e-books by subject.
- Saints’ Books — Free PDF editions of public-domain spiritual classics and lives of the saints.
- Biblioteca Virtual Miguel de Cervantes — Spanish digital library with the classics of the Spanish mystics and theologians (Teresa, John of the Cross, Luis de Granada).