- Ancient Greek Texts – An Electronic Library of Full Texts: http://www.mikrosapoplous.gr/en/texts1en.htm
- Attalus – Over 30.000 links to Greek & Latin authors on the web: http://www.attalus.org/index.html
- Bibliothèque numérique Medica: https://www.biusante.parisdescartes.fr/histoire/medica/index.php
- Christian Classics Ethereal Library – Early Church Fathers: http://www.ccel.org/fathers.html
- Clavdii Galeni Opera omnia (ed. C. Kühn): https://catalog.hathitrust.org/Record/008881627
- Corpus Medicorum Graecorum /Latinorum: https://cmg.bbaw.de/epubl/online/editionen.html
- Digital Fragmenta Historicorum Graecorum (DFHG): https://www.dfhg-project.org/
- Digital library of late-antique latin texts: https://digiliblt.uniupo.it/?fbclid=IwAR1oQTN-Dzl853DnHj7RxdIAZsHvzGFAJ7DFusEbLOF0mjD0VfI6TIGLSyE
- Early Christian Writings: http://www.earlychristianwritings.com/
- Ελληνική Πατρολογία: https://greekdownloads.wordpress.com/
- Fordham University, Internet Medieval Sourcebook, Selected Sources – Byzantium: http://sourcebooks.fordham.edu/halsall/sbook1c.asp
- Greek and Latin authors – List of sources and translations: http://www.attalus.org/info/sources.html
- Greek Bible in Byzantine Judaism project: http://gbbj.org/index.html
- Greek Wikisource: https://el.wikisource.org/wiki/%CE%9A%CF%8D%CF%81%CE%B9%CE%B1_%CE%A3%CE%B5%CE%BB%CE%AF%CE%B4%CE%B1/English
- Kühn’s Galen Opera Omnia (Medicorum Græcorum): https://www.textkit.com/greek-latin-forum/viewtopic.php?t=65078
- Loebolus – Access to all the public domain Loebs in the form of PDF’s: http://ryanfb.github.io/loebolus/
- Μνημοσύνη: Ψηφιακή Βιβλιοθήκη της Αρχαίας Ελληνικής Γραμματείας: https://www.greek-language.gr/digitalResources/ancient_greek/library/index.html
- Patrologia Graeca – Latina: http://patristica.net/graeca/ – http://www.roger-pearse.com/weblog/patrologia-graeca-pg-pdfs/ – http://www.documentacatholicaomnia.eu/1815-1875,_Migne,_Patrologia_Latina_01._Rerum_Conspectus_Pro_Tomis_Ordinatus,_MLT.html
- Perseus Digital Library: https://www.perseus.tufts.edu/hopper/
- Répertoire des sources philosophiques antiques: http://rspa.vjf.cnrs.fr/01/
- Searchable Greek Inscriptions: https://inscriptions.packhum.org/
- Sources Chrétiennes – Auteurs anciens: http://www.mom.fr/ressources-numeriques/bases-de-donnees/auteurs-anciens – http://www.sources-chretiennes.mom.fr/index.php?pageid=auteurs_anciens
- Sources littéraires – Collections d’auteurs chrétiens: http://bcs.fltr.ucl.ac.be/SLChr.html
- Augustine of Hippo: http://www.augustinus.it/ – http://faculty.georgetown.edu/jod/conf/ – http://faculty.georgetown.edu/jod/augustine/
- Tesserae – Late Antique Texts Available: http://tesserae.caset.buffalo.edu/blog/late-antique-texts-available/
- The Fathers of the Church: http://www.newadvent.org/fathers/
- Τhe Hellenistic Astrology Website – Translations and Critical Editions: http://www.hellenisticastrology.com/texts/
- The International Greek New Testament Project: http://www.igntp.org/
- The Internet Classics Archive: http://classics.mit.edu/index.html
- The Latin New Testament – A Guide to its Early History, Texts, and Manuscripts: https://global.oup.com/academic/product/the-latin-new-testament-9780198744733?cc=us&lang=en&#
- Theoi Classical Texts Library: https://www.theoi.com/Library.html
- Thesaurus Linguae Graecae (TLG): http://stephanus.tlg.uci.edu/
- The Tertullian Project: http://www.tertullian.org/
- Topos Text – an indexed collection of ancient texts and mapped places relevant the the history and mythology of the ancient Greeks from the Neolithic period up through the 2nd century CE: http://topostext.org/
- Guide to Evagrius Ponticus: http://evagriusponticus.net/