We have put together the following collections of free online resources, databases and research platforms.
Open Access search engines
| BASE | Bielefeld Academic Search Engine contains more than 150 million documents of which about 60% are Open Access To find these documents enter access:1 next to your search terms into the search bar |
| DOAJ | articles from about 12,000 Open Access journals |
| OpenAire | Open Access online documents compiled into one search engine |
Repositories
| DINI | List of certified Open Access repositories |
| Publisso | Life Sciences |
| EconStor | Economics |
| SSOAR | Social Sciences |
| ART-Dok | Arts |
| ostdok | Eastern Europe Studies |
| Propylaeum | Classical Studies |
| intR2Dok | Law |
You find more repositories sorted by research areas here. Full text access might not be possible everywhere, but ordering articles is still possible via our request forms.
Digitale Sammlungen alter Drucke und Handschriften
| SLUB Dresden | Kollektionen der Staats- und Landesbibliothek Dresden |
| Münchener DigitalisierungsZentrum | Sammlungen der Bayerischen Staatsbibliothek München |
| Wolfenbütteler Digitale Bibliothek | Altbestand der Herzog August Bibliothek Wolfenbüttel |
| Manuscripta germanica | mittelalterliche Handschriften der Staatsbibliothek zu Berlin |
| Heidelberger historische Bestände | Handschriften, Urkunden, Inkunabeln und alte Drucke aus den Beständen der Universitätsbibliothek Heidelberg |
| Gallica | Sammlungen der französischen Nationalbibliothek |
| British Library | Karten und Manuskripte aus der britischen Nationalbibliothek |
| ÖNB digital | Bücher, Grafiken und Fotografien aus der österreichischen Nationalbibliothek |
| Library of Congress | Sammlungen der Library of Congress |
| Trinity College | digitale Bestände der Bibliothek des Trinity College |
| NYPL | Sammlungen der New York Public Library |
| Digital Public Library America | digitale Bibliothek, die die Bestände verschiedener US-amerikanischer Bibliotheken präsentiert |
| e-rara | digitalisierte Drucke des 15.-20. Jahrhunderts aus Schweizer Institutionen |
| Digivatlib | Sammlungen der Bibliothek des Vatikan |
| Digital Bodleian | Sammlungen der Bodleian Library |
Images
| Collection of image databases | link collection of the Art History Institute of the Free University Berlin |
| heidiCON | Multimedia database of the Heidelberg University |
| bpk | Agency BPK |
| Image-based similarity search | image collections of the State Library Munich |
| Europeana | collections of European archives, libraries and museums |
We are glad to investigate whether certain images may be reproduced in your publication and what the appertaining conditions might be.
Books
| DOAB | 25.000 freely available e-books |
| Internet Archive | collection of fair use e-books and loan of other e-books after personal login (no waiting list until June) |
| Hathi Trust | collection of fair use e-books from various institutions |
| Springer | Springer Open Access e-books |
Preprints
| arXiv | Sciences |
| SSRN | Social Sciences |
| bioRxiv | Biology |
| LawArXiv | Law |
| RePEc | Economics |
| Arabixiv | various topics in Arabic |
Open Educational Resources
OER include complete onlince courses, text books and other material for online seminars like videos or presentations.
Family history
| Stolpersteine in Berlin | commemorative stones dedicating to all people persecuted by the NS regime |
| Berlin directories | directories from 1707-1992 |
| The Central Database of Shoah Victims' Names | database of Yad Vashem |
| Holocaust Statistics | statistics of the jewish citizens of Germany during 1933-1945 (only in German) |
| Hamburg Passenger Lists 1850-1934 | database of German immigrants to the United States |
| Archives Library Information Center | link collection of genealogy resources |