Incunabula Short Title Catalogue (ISTC). The international database of 15th-century European printing; https://data.cerl.org/istc/io00048800.

Universal Short Title Catalogue (USTC). An open access bibliography of early modern print culture; https://www.ustc.ac.uk/.

An Analytic Bibliography of On-line Neo-Latin Texts, maintained by Dana F. Sutton; https://philological.cal.bham.ac.uk/bibliography/index.htm.

Handschriftenportal, a database of manuscripts in German libraries; https://handschriftenportal.de/.

The Post Reformation Library (huge collection of late-scholastic primary sources); https://www.prdl.org/.

SIEPM’s virtual library, maintained by Jean-Luc Solère; https://siepm-digitalresources.bc.edu/.

Magister Dixit Project, collection of handwritten lecture notes from the ancient University of Louvain; https://www.kuleuven.be/lectio/research/MagisterDixit.

Alcuin, a comprehensive database of scholastic authors from ca. 500 – ca. 1500; http://www.alcuin.de/. 

Base de Dades Ramon Llull (Llull DB), a comprehensive data base for research on Ramon Llull; https://www.ub.edu/llulldb/.

Digital Averroes Research Environment, an exhaustive collection of manuscripts, editions, and literature; https://dare.uni-koeln.de/.

Corpus Thomisticum, database for research on Aquinas and the Thomist tradition; https://www.corpusthomisticum.org/.

Archive of the Benedictine University of Salzburg, with an important collection of philosophical dissertations ("Thesenverteidigungen"); https://eplus.uni-salzburg.at/benediktiner.

Database of Latin American (Chilean) philosophical manuscripts, maintained by Abel Aravena Zamora; Corpus Filosófico de la época colonial chilena. 

Bert Roest and Maarten van der Heijden’s website Franciscan Authors, 13th–18th Century: A Catalogue in Progress; https://applejack.science.ru.nl/franciscanauthors/.

Tobias Hoffmann, Duns Scotus Bibliography from 1950 to the Present (10th edition, August 2022); online here.

Claus A. Andersen’s bibliographies of scholastic works available online, including the Vatican edition of John Duns Scotus’s Opera omnia; https://uclouvain.academia.edu/ClausAsbjørnAndersen/Work-tools.

Uriël Smeets’s Lineamenta Bibliographiae Scotisticae from 1942 is available from the Hungarian National Digital Archive; https://en.mandadb.hu/tetel/348799/Lineamenta_Bibliographiae_Scotisticae.

Russell L. Friedman’s Peter Auriol Homepage includes imporant editions of  Auriol's works (e.g., the “Electronic Scriptum”); https://www.peterauriol.net/.

Rega Wood’s “The Richard Rufus of Cornwall Project” website features (mainly provisional) editions of Rufus’s works; https://rrp.stanford.edu/editions.shtml.

Robert Pasnau’s blog, with news concernig all aspects of Medieval philosophy; https://inmediasphil.wordpress.com/.

Jacob Schmutz's blog with conference news etc. concerning all aspects of late scholasticism; https://www.facebook.com/scholasticon/.

Garrett R. Smith’s blog with a wealth of useful information concerning, mostly, the early Scotist tradition; see http://lyfaber.blogspot.com/.

Sydney Penner’s website, with a useful survey of late-scholastic literature available online; http://sydneypenner.ca/scholastics.shtml.

Robert Andrews’s compilation of views attributed to Boethius called “Boethius Dicit,” posted on the webiste of the Richard Rufus of Cornwall project; https://rrp.stanford.edu/boethius_dicit.shtml.

Mário Santiago de Carvalho and Simone Guidi’s website devoted to the Aristotelian tradition of Coimbra; https://www.conimbricenses.org/.

Patrícia Calvario’s project website De visione beatifica with a useful research bibliography of Early Modern scholastic theology; https://devisionebeatifica.com/.

Michael Renemann’s bibliography of Wolfgang Hübener’s works, some of which are available online; https://homepage.ruhr-uni-bochum.de/michael.renemann/huebener-bibliographie.html.

Neo-Latin dictionary (from Petrarca to 1700), edited by Johann Ramminger; http://nlw.renaessancestudier.org/.

Dizionario di Abbreviature latine ed italiane, compiled by Adriano Cappelli, first published 1899; online here and here.