- Catalogue of Digitized Medieval Manuscripts
- Europeana
- European Library
- European Digital Library
- IFLA Rare Books and Manuscripts Section
- KOOP-LITERA - Portal der deutschsprachigen Literaturarchive
- LIBER
- MALVINE
- Repositories of Primary Sources
- Kristeller: Latin manuscript books before 1600
- Scriptorium / Bulletin Codicologique
- Dutch East India Company Archives and Research
Useful links pertaining to local or national cooperation are to be found in the corresponding section of the National Backgrounds.