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").

Legal journals, commentaries and loose-leaf editions of the publisher C. H. Beck in full text. Juristische Zeitschriften, Kommentare und Loseblattausgaben des Verlags C. H. Beck im Volltext.

The Staatsbibliothek zu Berlin - Preußischer Kulturbesitz (Berlin State Library - Prussian Cultural Heritage) acquires texts from all fields of knowledge in all languages, in every available form, from all epochs and all countries of the world - providing the materials are of interest for academic and research purposes. Current holdings and collections include printed works from many centuries, manuscripts, music autographs, maps, globes, atlases, newspapers and periodicals, various microformed materials, an increasing number of digitally presented texts as well as extensive databases.

The union catalog encompasses the holdings of the Bavarian State Library, of libraries of Bavarian Universities and Universities of Applied Sciences, of several regional libraries and of some institutions affiliated with churches or ministeries. Die Verbunddatenbank umfasst den Bestand der Bayerischen Staatsbibliothek, der Universitäts- und Fachhochschulbibliotheken, diverser staatlicher Regionalbibliotheken und einiger kirchlichen und ministeriellen Einrichtungen.

Clio-online is a central Internet gateway for historical scholarship in teaching and research. Sponsored by the Deutsche Forschungsgemeinschaft (DFG), the gateway enables efficient access to the diverse range of historical online ressources available to scholars and teachers within the field of history. Clio-online ist ein zentrales Internet Fachportal zur Geschichte. Seit Mai 2002 von der Deutschen Forschungsgemeinschaft gefördert, ermöglicht das Projekt durch seine Online-Dienste und Service-Angebote einen effizienten Zugang zu den umfangreichen Online-Ressourcen innerhalb der Geschichtswissenschaften.

Copac exposes rare and unique research material by bringing together the catalogues of c.90 major UK and Irish libraries. In a single search you can discover the holdings of the UK’s national libraries (including the British Library), many University libraries, and specialist research libraries.

DEPATISnet is a service provided to you by the German Patent and Trade Mark Office. You can conduct online searches in patent publications from around the world stored in the database of DEPATIS, the in-house patent information system of the GPTO.

The catalog comprises the holdings of the locations Leipzig since 1913, Frankfurt am Main since 1945, the holdings of the Deutsches Musikarchiv since 1976, and archival papers of the Deutsches Exilarchiv 1933-1945 since 2005. The catalog covers monographs, journals, maps and atlases, music and sound storage media, and dissertations published in Germany since 1913 (in print or electronically), in addition, translations from German into other languages and foreign-language works related to Germanic culture (since 1941). -- Der Katalog umfasst die Bestände der Standorte Leipzig seit 1913, Frankfurt am Main seit 1945, die Bestände des Deutschen Musikarchivs seit 1976 und die Archivalien des Deutschen Exilarchivs 1933-1945 seit 2005. Der Katalog beinhaltet in Deutschland seit 1913 erschienene Monografien, Zeitschriften, Karten und Atlanten, Musikalien und Tonträger, Dissertationen und Habilitationsschriften in gedruckter oder elektronischer Form, außerdem Übersetzungen aus dem Deutschen in andere Sprachen und fremdsprachige Germanica (seit 1941).

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.

EconBiz - a suject portal for economics and business studies - supports you in retrieving economic literature. It offers a literature search across important German and international databases, including the holdings of ZBW, and provides access to information services of libraries. EconBiz - die Virtuelle Fachbibliothek Wirtschaftswissenschaften - unterstützt Sie bei der Recherche wirtschaftswissenschaftlicher Fachinformationen. Sie können in Internetquellen, in Online-Katalogen und Volltexten recherchieren und auf Informationsdienstleistungen von Bibliotheken zugreifen. Enthält neben aktueller Literatur viele Publikationen , die für Wirtschaftshistoriker interessant sind (1500 ff).

Throughout Europe, national patent offices and the European Patent Office (EPO) offer free patent information on the Internet Patents reveal solutions to technical problems, and they represent an inexhaustable source of information: more than 80 percent of man's technical knowledge is described in patent literature. From the middle of 1998 onwards, esp@cenet users have been able to access the bibliographic data of all patents published in the preceding two years by any member state of the European Patent Organisation, as well as by the European Patent Office and the World Intellectual Property Organization (WIPO). In addition, full-page facsimile images of documents are also retrievable to facilitate more detailed analysis of these documents. The data for this particular service is stored at the relevant national office.

EUR-Lex provides free access to public EU documents in the 24 official languages. This includes: * the Official Journal of the European Union * EU law (EU treaties, directives, regulations, decisions, consolidated legislation, etc.) * preparatory acts (legislative proposals, reports, green and white papers, etc.) * EU case-law (judgements, orders, etc.) * international agreements * EFTA documents * other public documents EUR-Lex is based on the CELEX database, and is updated daily.

GBV is the Common Library Network of the German Federal States Bremen, Hamburg, Mecklenburg-Vorpommern, Niedersachsen, Sachsen-Anhalt, Schleswig-Holstein and Thüringen. The head office of the GBV (VZG) is situated in Göttingen. The GBV has established a virtual library in form of the GBV Union Catalogue (GVK) combining the resources of all participating libraries and making them easily accessible to the public.

The GESIS search can be used to find information about social science research data and open access publications. It covers: * Research Data * Variables from questionnaires * Instruments and tools * Literature, incl. publications on research data & surveying instruments, open access publications in the social sciences, as well as literature on the topic "Women in science" * Collections of the GESIS library * GESIS webpages, incl. general information and offers on the GESIS websites

The union catalog lists the holdings of all scientific libraries in Hessen and Rheinhessen. Inter-library loan requests may be submitted.

Heise online is a leading German news platform focusing on information technology, telecommunications technology and their impact on society. The MPG subscription includes access to 6 well-known magazines from the Heise journal portfolio (available content from 2016 - present): c't, iX, MIT Technology Review, Mac & i, Make, c't Fotografie. The product heise+ extends the freely available platform content and provides access to special content for MPG users, such as exclusive tests, buying and consumer advice, analyses, podcasts, practitioners' reports and background articles.

This database covers international publications about German history from the early days until the present. Die Datenbank erfaßt und erschließt internationale Veröffentlichungen zur deutschen Geschichte von den Anfängen bis zur Gegenwart.

The Karlsruhe Virtual Catalogue (KVK) is a meta search engine which allows you to simultaneously access selected library and book trade catalogs worldwide. Altogether, these resources contain hundreds of millions of books, magazines and other media.

The KOBV-Index is a central database that is maintained and regularly updated at KOBV-Zentrale. Der KOBV-Index ist eine zentrale Datenbank, die in der KOBV-Zentrale gepflegt und regelmäßig aktualisiert wird.