AMS Historica hosts the digital versions of books preserved in the library of the Alma Mater Studiorum, University of Bologna.

The Berlin Papyrus Database (BerlPap) is a project for the inventory and digitization of Greek and Latin texts of the Berlin Papyrus Collection.

The Biblissima Portal offers access to a set of digital data on manuscripts from the nine partner teams of the Biblissima consortium

Digitized content from the Bodleian Libraries and Oxford college libraries.

This website offers digitised copies of manuscripts and archives in the British Library’s collections.

Calames is a French manuscript catalog, and it’s especially useful if you're working with ancient or medieval manuscripts housed in French academic institutions.

Cambridge University Library's digital collections.

A Library of Knowledge of the Cuneiform Digital Library Initiative.

Digital Scriptorium (DS) is a digital consortium and online database of pre-modern manuscripts, focusing primarily on Western European medieval and Renaissance manuscripts housed in U.S. libraries and collections.

French National Library's digital collections.

The Biblioteca Digitale Italiana offers a meta-search engine for accessing Italian digital libraries and primary sources.

The LDAB database attempts to collect the basic information on all ancient literary texts, as opposed to documents, not only in Latin and Greek, but in all ancient languages.

Manuscripta is A Digital Catalogue of Medieval and Early Modern Manuscripts in Sweden

The Munich DigitiZation Center handles the digitization of the cultural heritage preserved by the Bavarian State Library and by other institutions.

A digital catalog of Greek manuscript collections housed in Greece, developed by the University of Athens.

Papyri supports browsing and aggregation of ancient papyrological documents.

Oxyrhynchus Papyri, Antinopolis Papyri, Herculaneum Papyri (Oxford facsimiles).

Pinakes is an online database of Greek manuscripts, maintained by the Institut de recherche et d’histoire des textes (IRHT) in France. It provides detailed information about where Greek texts survive, in which manuscripts, and in which libraries around the world.

Princeton University Library's digital collection.

A corpus of up-to-date editions of the Greek, bilingual and trilingual inscriptions from Ptolemaic Egypt.

QDL is making a vast archive featuring the cultural and historical heritage of the Gulf and wider region.

A digital library from the University of Pennsylvania offering high-resolution images and detailed metadata for manuscripts in the public domain.

The UW-Digitized Collections contain rare archival documents from across the UW, Wisconsin, and the world.

DigiVatLib provides access to the Vatican Library’s digitized collections.

A rich digital library offering access to medieval and early modern manuscripts preserved in Swiss libraries.