The goal of OAIster is to create a collection of previously difficult-to-access, academically-oriented digital resources that is easily searchable by anyone.

In OLC you have access more than 25 million articles from over 20,000 scientific periodicals beginning with the year of publication 1993. The Online Contents records are supplied by Swets and are updated daily.

OLC Chemistry is a subject oriented selection of bibliographic data from the Database Online Contents. This database is regularly enhanced by table of contents data from additional periodicals out of the special collections of TIB Hannover.

The database OLC Pharmacy is a subject oriented selection of bibliographic data from the Online Contents database that is regularly enhanced by table of contents data from additional periodicals out of the special collections of the UB Braunschweig, the central subject library of Germany for pharmacy.

Open Syllabus is a non-profit research organization that collects and analyzes millions of syllabi to support novel teaching and learning applications. Open Syllabus helps instructors develop classes, libraries manage collections, and presses develop books. It supports students and lifelong learners in their exploration of topics and fields. It creates incentives for faculty to improve teaching materials and to use open licenses. It supports work on aligning higher education with job market needs and on making student mobility easier. It also challenges faculty and universities to work together to steward this important data resource. Open Syllabus currently has a corpus of nine million English-language syllabi from 140 countries. It uses machine learning and other techniques to extract citations, dates, fields, and other metadata from these documents. The resulting data is made freely available via the Syllabus Explorer and for academic research. The project was founded at The American Assembly, a public policy institute associated with Columbia University. It has been independent since 2019. All of the syllabi in the current collection are English language documents – including from universities where English is not the primary teaching language.

The platform serves as interface to over 300 journals published by the Oxford University Press (OUP) in the humanities, social sciences, law, science, and medicine. Two-thirds of this journals are published in partnership with learned and professional societies around the world. The MPG subscription enables full text access to OUP's full journal collection. It also covers article-processing charges for Max Planck authors in hybrid and selected fully open access journals offering CC-BY licenses. Further details are available on the MPDL website.

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.

Oxford Reference Online is a collection of more than 200 dictionaries and encyclopedia from various subject areas. Oxford Reference Online consists of a wealth of facts, figures, definitions, and translations found in dictionary, language reference, and subject reference works published by Oxford University Press. In addition to the Premium Collection, the Western Civilization Collection is available.

Various dictionaries are available.

The Portico digital preservation service was created in 2002 with the support of libraries and publishers to ensure that the world's scholarship, now stored and disseminated largely in digital form, will be accessible to future generations. Users from the Max Planck Society gain access to preserved content when specific conditions or “trigger events” cause titles to no longer be available from the publisher or through a successor.

Portland Press Limited, the wholly-owned trading subsidiary of the Biochemical Society, is a leading innovative publisher of journals, books and electronic resources. The platform provides Max Planck researchers with selective access to the full texts of journals owned by the Biochemical Society, see link "eJournals licensed" below. The MPG subscription also covers article-processing charges for Max Planck authors in all Portland Press/Biochemical Society journals. Further details are available on the MPDL website.

Preprint Citation Index is a multidisciplinary collection of preprints from a wide range of leading repositories, including arXiv, bioRxiv, chemRxiv, medRxiv, and Preprints.org. Currently, it provides more than 2 million articles ahead of the formal journal publication in the sciences, social sciences and arts & humanities. Papers from more than 20 repositories will be added in future. Within the Web of Science platform researchers can thus discover preprint records alongside peer-reviewed journal articles and other content sets. This simplifies the process of evaluating preprint quality and trustworthiness by connecting preprints to the versions of record or linking to other scholarly output from preprint authors and the citation network in Web of Science. Furthermore you can link directly to the preprint repositories to view each version of the preprint and download full texts.

PressReader delivers a large selection of the world’s most popular newspapers and magazines on a single platform. The current subscription provides full text access to recent issues of more than 7,000 publications in over 60 languages, including 370 German titles. The previous Library PressDisplay product is still available under: https://library.pressdisplay.com/pressdisplay.

The Proceedings of the National Academy of Sciences is one of the world's most-cited and comprehensive multidisciplinary scientific journals. Established in 1914, PNAS publishes the results of original research, as well as science news, commentaries, reviews, perspectives, colloquium papers, and actions of the National Academy of Sciences. The MPG subscription also covers article-processing charges for Max Planck authors in "Proceedings of the National Academy of Sciences of the United States of America (PNAS)". Further details are available on the MPDL website.

Project Gutenberg is a volunteer effort to digitize and archive cultural works. Founded in 1971 by Michael Hart, it is the oldest digital library. Project Gutenberg's mission is "To encourage the creation and distribution of eBooks".

The integration between ProQuest Dissertations & Theses Global with the Web of Science enables seamless discovery of early career, post-graduate research from all around the world, alongside records for journal articles, conference papers, book chapters, preprints, patents, and more. ProQuest Dissertations & Theses Citation Index makes more than 5.5 million multidisciplinary dissertations and theses searchable, from over 4,100 institutions and more than 60 countries, dating back to 1637. Researchers have simultaneous access to unpublished and published scholarship that helps them to discover emerging trends, identify new areas of research and find post-graduate programs engaged in cutting-edge research. For joint subscribers of the Web of Science and PQDT Global, direct full text linking from the Web of Science to the ProQuest platform is available, giving access to 3 million full-text works from thousands of universities. Additionally, cited reference indexing and linking helps to further connect dissertations and theses to related works and discover hard-to-find sources of research.

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.

A digital archive of life sciences journal literature managed by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM).

Refubium is a service of the university library of the Freie Universität Berlin. As an institutional repository it collects documents, dissertations, postdoctoral theses, and research data.

MPG Resource Navigator is a web application to navigate through scientific information resources available to staff and guests of the Max Planck Society. It includes licensed databases, digital collections, and reference works. In addition, recommendable retrieval tools available on the web free of charge are part of the collection. Moreover, almost all Max Planck Institute library catalogs, as well as selected external ones, are accessible from here.