Cambridge Books Online is the online content delivery service for Cambridge University Press's electronic book collections. The current MPG subscription comprises selected subject collections, additional content may have been licensed by individual Max Planck institutes. Max Planck authors can publish their scientific work at CUP as an Open Access eBook, with book publishing charges partly covered centrally. Further details are available on the MPDL website.

The Cognitive Linguistics Bibliography (CogBib) is an electronic database that covers a wide range of subjects within the broader field of cognitive linguistics. The most important function of CogBib is to make scholars both in and outside of the field of cognitive linguistics aware of the diverse research output available on a range of given topics.

Walter De Gruyter publishes a wide variety of content covering humanities, medicine, the sciences and law. The "De Gruyter Online" platform provides access to title information and the electronic content for De Gruyter journals and books under one roof. Users from the MPG have access to following products: * De Gruyter Journals and Yearbooks - current content of selected serial titles available on the platform (last 13 volumes) * De Gruyter Journal Archive - backfile content of 150 titles * De Gruyter Online / Research Now E-Journal Archive - about 50 journals focusing on research in economics, formerly published by Berkeley Electronic Press until 2022 * De Gruyter eBooks - a collection of purchased e-books which is continuously extended by single e-book acquisitions by MPG libraries

The International Bibliography of Art (IBA) is the successor to the Bibliography of the History of Art (BHA), and retains the editorial policies which made BHA one of the most trusted and frequently consulted sources in the field. The database includes records created by the Getty Research Institute in 2008-09, with new records created by ProQuest using the same thesaurus and authority files. The database will grow by 18,000 records per year, ensuring unbroken coverage of journals that were indexed in BHA and IBA prior to 2010. The initial data set created by the Getty Research Institute in 2008-2009 covers scholarship up to 2009, including retrospective records for material published in previous years, and in some cases the new ProQuest indexing will also cover retrospective years in order to fill gaps in coverage. Publications covered include at least 500 core journals, with an emphasis on specialist and rare titles that are not covered by other indexes, plus detailed coverage of monographs, essay collections, conference proceedings and exhibition catalogues. We aim for at least 60% of the content to be in languages other than English (primarily German, French, Italian and Spanish), with a proportion of this indexing provided by national art libraries and freelance indexers from around the world.

MIT Press Direct is the content platform for publications owned by the MIT Press. The Press is one of the largest and distinguished university presses in the world and a leading publisher of books and journals at the intersection of science, technology, art, social science, and design. Within the Direct to Open (D2O) model Max Planck users have access to current ebooks from selected subject collections (published between 2022 and 2024), i.e. STEM collection, art and design collection, humanities and social sciences collection. The MPG subscription also covers the complete archive collection with more than 2,500 scholarly books spanning the publishing history of the MIT Press.

The Oxford English Dictionary is a guide to the meaning, history, and pronunciation of over half a million words and phrases, both present and past, from across the English-speaking world. It traces the usage of words through 3.5 million quotations from a wide range of international English language sources, from classic literature and specialist periodicals to film scripts, song lyrics and social media posts.

Including Oxford Scholarship Online (OSO), the University Press Scholarship Online (UPSO) publishes new books every month from an ever-growing roster of contributing presses, each adding to the variety of subjects covered on the platform. The MPG purchased the volumes 2003-2013/2014 of 16 OSO subject collections. This selection is continuously extended by single e-book acquisitions by MPG libraries.

The PsycINFO databases cover the professional and academic literature in psychology and related disciplines including medicine, psychiatry, nursing, sociology, education, pharmacology, physiology, linguistics, and other areas. Coverage is worldwide, and includes references and abstracts to over 1300 journals and to dissertations in more than 30 languages, and to book chapters and books in the English language. Over 50,000 references are added annually. Popular literature is excluded.

SciELO (Scientific Electronic Library Online) is a program of the Sao Paulo Research Foundation for the cooperative publishing of open access journals on the internet. Content includes regional journals from Latin American and the Caribbean as well as titles from Spain, Portugal and South Africa. The index covers approximately 650 titles (over 350 adding content to journals already covered in the Web of Science) and contains several million cited references.