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 MUSE is a leading provider of digital humanities and social science content for the scholarly community. Since 1995 the MUSE journal collections cover full-text versions of scholarly journals from many of the world's leading university presses and scholarly societies, with over 120 publishers currently participating.

SAGE Journals Online provides access to more than 1000 journals with a coverage spanning the humanities, social sciences, and science, technology, and medicine. Max Planck researchers have full text access to a multidisciplinary selection of the full journal collection. In addition, the agreement covers article-processing charges for Max Planck authors in Gold Open Access journals and in hybrid titles in the SAGE Premier package. Further details are available on the MPDL website.

The Science Online platform provides fulltext access to the peer-reviewed journals published by the American Association for the Advancement of Science (AAAS).

The journal collection on the SpringerLink platform includes more than 2,500 English-language and close to 200 German-language journals. The current subscription provides Max Planck researchers with full text access to nearly the entire journal collection. In addition, the Max Planck Society covers article-processing charges in line with the SpringerOpen and the Springer Open Choice programmes. Further details are available on the MPDL website.

Casalini libri's full text platform offers access to over 29,000 ebooks and 840 ejournals from more than 200 Italian, Spanish, French and Portuguese publishers. Max Planck users have access to: * EIO Monographs - a collection of 1,500 monographs and proceedings in humanities and social sciences from academic publishers in Italy. * EIO Periodicals Archive - pre-2011 content of 221 academic journals published by various Italian publishers.

Ulrich’s Periodicals Directory is a bibliographic database providing detailed, comprehensive, and authoritative information on serials published throughout the world. It covers all subjects, and includes publications that are published regularly or irregularly and are circulated free of charge or by paid subscription. Ulrich’s was first published in 1932.

wiso is an online database specially tailored to the needs of users from academic and research institutions by GBI-Genios. It aggregates mainly German content from various publishers, covering economics, social sciences, psychology and technology. wiso provides access to major reference databases, to full texts of selected journals, e-books, magazines and newspapers like VDI Nachrichten or Handelsblatt as well as to company information and market data.