The primary aim of DOAB is to increase discoverability of Open Access books. Academic publishers are invited to provide metadata of their Open Access books to DOAB. An overview of participating publisher can be found here.

Edition Open Access provides open access to the publications of the Max Planck Research Library for the History and Development of Knowledge. The aim is to disseminate the results of scholarly work – in accordance with the open-access paradigm – to a broad audience rapidly and at low cost. The volumes presented here are directed at scholars and students in a wide range of disciplines. The works are available online both as print-on-demand books and open-access publications and can be accessed, together with additional information.

Google Book Search is a service from Google that searches the full text of books that Google scans, converts to text using optical character recognition, and stores in its digital database.

The Max Planck e-Book Index provides holdings of electronic books licensed for users in the Max Planck Society.

The Max Planck Journal Index provides holdings of a great range of printed journals available within the Max Planck Society. Besides, it contains metadata of electronic journals as loaded from the EZB. The database is updated regularly from the ZDB (twice a year) and the EZB (monthly).

The MPI EVA Library Catalogue provides information on books and journals available from the Institute's library.

The library of the Max Planck Institute for the History of Science is an interdisciplinary special library focussing in its collections on the history of science. Its inventory, built up since 1994, is only available to scientists from the institute and is not part of the interlibrary loan system.

Die Bibliothek ist eine Spezialbibliothek mit Sammelschwerpunkten in den jeweiligen Arbeitsgebieten des Instituts: biomedizinische Optik, Biophysik, molekulare Biomechanismen, molekulare Neurobiologie und Zellphysiologie.

The MPI-CBG library provides comprehensive literature and informations services to all MPI-CBG members and guests.

The Campus Library is a shared service unit for following neighboring Max Planck institutes: Max Planck Institute for Biological Cybernetics, Max Planck Institute for Biology Tübingen and the Friedrich Miescher Laboratory

A collaborative effort of the Networked Digital Library of Theses and Dissertations (NDLTD), OCLC, VTLS, and Scirus, the NDLTD Union Catalog contains more than one million records of electronic theses and dissertations. For students and researchers, the Union Catalog makes individual collections of NDLTD member institutions and consortia appear as one seamless digital library of electronic theses and dissertations.

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".