BASE is a multidisciplinary search engine for scholarly internet resources which have been harvested from several hundred scientific repositories. Some of the indexed resources in BASE are subject to license, while most material is free available ("open access").

Bowker's Books in Print is a bibliographic database on the ProQuest platform featuring millions of in-print, out-of-print, and forthcoming books, audio books, and videos from more than 40 countries, including the U.S., U.K., Canada, Australia, New Zealand, as well as Spanish-language titles from Spain and Central and South America. Book descriptions available are extended by annotations, tables of contents, and publisher information.

SciFinder-n is a research solution that provides access to the world's most comprehensive and authoritative collection of chemical reactions, substances and scientific literature curated by expert scientists in chemistry and related fields like physics, material science, biochemistry and genetics. Of key importance is CAS Registry, the CAS substance collection, which includes substances, their names, structures and registry numbers. In addition, proteins and nucleic acid data are indexed providing a unique environment for molecular biologists, e.g. for design of target molecules. Furthermore, two additional CAS solutions are part of the MPG subscription: * CAS Formulus: a comprehensive formulations database that supports formulation scientists to create products * CAS Anlaytical Methods: a tool to search, compare and understand the latest published analytical and synthetic scientific methods

The Chicago Manual of Style (CMS) is a style guide for American English published since 1906 by the University of Chicago Press. The CMS deals with various aspects of editorial practice, from American English grammar and usage to document preparation. It also prescribes writing and citation styles widely used in publishing. The platform offers the full contents of the most recent two editions.

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.

Current Contents Connect provides access to bibliographic information in over 8,000 scholarly journals and more than 2,000 books. CC Connect also offers access to eFirst content, which allows you to view bibliographic information from several hundred electronic journals before an issue is published in print. CC Connect provides a very convenient way to select the newest editions of your journals of interest and to browse their Tables of Contents (TOC). The following Current Contents editions are available and may be searched simultaneously or individually: * Agriculture, Biology & Environmental Sciences (ABES) * Social & Behavioral Sciences (SBS) * Clinical Medicine (CM) * Life Sciences (LS) * Physical, Chemical & Earth Sciences (PCES) * Engineering, Computing & Technology (ECT) * Arts & Humanities (AH)

The Data Citation Index (DCI) on the Web of Science™ platform provides a single point of access to quality research data from repositories across disciplines and around the world. DCI includes bibliographic metadata from research data in Data Studies and Data Sets from a wide range of international data repositories. Source records include three document types: Repository, Data Study, and Data Set. Each record in the product contains standard bibliographic metadata such as author, abstract, keywords, descriptor terms, and more. Records may include cited references and citing article counts. DCI covers research areas in the social sciences, physical sciences, life sciences, and humanities.

ProQuest Dissertations and Theses Global is the world's most comprehensive collection of dissertations and theses, covering materials back to the first U.S. dissertation, accepted in 1861, as well as to European dissertations from the 17th century. The database is the official dissertations repository for the Library of Congress, with 5.5 million bibliographic citations, 3 million full texts, 4,100 contributing institutions worldwide and 250,000 works added annually. Full-text coverage spans from 1743 to the present, with citation coverage dating back to 1637.

The CRC Handbook of Chemistry and Physics (HBCP), updated annualy, provides broad coverage of all types of physical science data commonly encountered by scientists and engineers. It consists of tables of data and current international recommendations on nomenclature, symbols and units. A new series highlights the achievements of some of the major historical figures in chemistry and physics.

LexiQamus is a reference work and online tool for identifying and analyzing illegible words from Ottoman-Turkish texts. It can even be used to search for the recognisable parts of a word. Based on over 170,000 words and phrases from 19 different dictionaries, LexiQamus comprises the entries of the reference work "A Turkish and English lexicon" (1890) by James Redhouse and all content from the website osmanlicasozlukler.com which collects entries from Ottoman dictionaries.

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

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 OSF Preprints search combines records from various preprint repositories, including arXiv, bioRxiv, Cogprints, PeerJ, PsyArXiv, RePEc and SocArXiv.

Developed cooperatively with scholars and librarians worldwide, Oxford Bibliographies offers exclusive, authoritative research guides across a variety of subject areas. Combining the best features of an annotated bibliography and a high-level encyclopedia, this cutting-edge resource directs researchers to the best available scholarship across a wide variety of subjects.

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 Handbooks Online is a collection of handbooks in 17 subject areas, bringing together the world's leading scholars to write review essays that evaluate the current thinking on a field or topic, and make an original argument about the future direction of the debate. For the first time, all Handbooks are available online as well is in print across the subject areas. Monthly updates introduce articles in advance of print publication and beyond the book, online-only content ensures the most current, authoritative coverage anywhere.

This historic journal index enables the simultaneous search in millions of citations for articles published in the arts, humanities and social sciences, across more than 300 years. It enables researchers quickly and comprehensively to identify articles relevant to their field of study and reduces what could take years of research to a matter of minutes. Journals indexed span 37 key subject areas and multiple languages.

Various dictionaries are available.

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.

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.