Open access resources

The Directory of Open Access Books (DOAB), a joint search engine of OAPEN, OpenEdition, CNRS, and Aix-Marseille University, provides access to over 27,900 peer-reviewed academic books from 379 publishers.
HathiTrust, a collaborative effort of educational and research institutions, offers a collection of millions of titles digitized by partner libraries.
Founded in 1996, the Internet Archive (archive.org) provides access to digitized books and other digital works. Some books are not available for download as PDFs, but can be borrowed by a user for 14 days. Borrowing can be done through an account that can be opened for free and via Adobe Digital Editions.
Over 6,000 ebooks from Over 75 publishers ,including Brill, Cornell University Press, De Gruyter, and the University of California Press, are available to everyone.
OAPEN is an online library and publishing platform primarily focused on the humanities and social sciences, offering free access to academic books..
Open Book Publishers, an independent open-access publisher, publishes printed books in the humanities and social sciences, as well as free online versions of each book in PDF, HTML, and XML formats that can be read online, downloaded, reused, or attached anywhere.
OpenEdition is a French-based platform providing access to over 9,000 books under OpenEdition Books OpenEdition Books for electronic resources in the humanities and social sciences..
Project Gutenberg is a library providing free access to over 60,000 ebooks from around the world, including older works whose US copyrights have expired. You can download ebooks in various formats such as HTML, epub, Kindle, and plain text, or read them online.
Project Muse offers open-access journals and books from many leading university presses and academic communities.
SpringerOpen offers open-access journals and books across all fields of science, technology, medicine, humanities, and social sciences.
It is a volunteer-run, non-profit organization dedicated to producing a high-quality, carefully formatted, accessible, open-source, and free public ebook collection.
Under the umbrella of TÜBİTAK ULAKBİM, DergiPark provides electronic hosting and editorial process management services for academic journals published in Turkey. DergiPark supports national academic journals in establishing their presence in accordance with standards and increasing their international visibility.
TR Dizin is a platform created by ULAKBİM that hosts and indexes national journals in the fields of natural sciences, social sciences, dentistry, pharmacy, engineering, health sciences, as well as social and humanities sciences.
CORE (Connecting REpositories) collects and makes publicly available all open-access research output from archives and journals worldwide.
CiteSeerX is a digital library search engine that provides free access to over 5 million scientific documents, primarily focused on literature in computer and information science.
The Directory of Open Access Journals (DOAJ) is a pan-disciplinary resource that enables users to identify and search for free, full-text, quality-checked open access scholarly and academic journals.
It provides access to RePEc (Economic Research Papers), an online collection of research outputs, journal articles, and software in the field of economics.
OpenEdition Journals is a French-based platform providing access to over 500 journals under its umbrella for electronic resources in the humanities and social sciences.
Science Open is a free search and discovery platform that generally offers over 60 million articles in medicine and health sciences.
Developed and maintained by the open access publisher MDPI ,Scilit is a multidisciplinary, free scientific database that indexes scientific materials by pulling the latest data daily from CrossRef and PubMed.
The Council of Higher Education of the Republic of Turkey (YÖK) collects all master's and doctoral theses written in academic institutions in Turkey and provides free access to them. The YÖK Thesis Center is Turkey's national thesis center.
Dart-Europe, a joint initiative of European research libraries and library consortia, provides global access to 28,729 open-access research dissertations from 619 universities in 28 European countries.
EThOS is the UK's national dissertation service, containing over 500,000 PhD dissertations from more than 120 institutions. Approximately 260,000 of these dissertations are full-text and can be downloaded from the EThOS database or the respective institutional archives.
Established in 1965, Thesis Canada is a joint program between the Library and Archives of Canada (LAC) and Canadian universities, providing access to thousands of master's and doctoral theses from participating universities.
The Networked Digital Library of Theses and Dissertations (NDLTD) is a collaborative effort by universities worldwide to promote the creation, access, and preservation of electronic master's and doctoral dissertations (ETDs) by academic institutions around the globe. The NDLTD catalog provides access to over one million electronic theses and doctoral dissertations (ETDs).
The Australian National Library's Trove service allows searching nearly a million theses, some available only in print format, while others are available online in digital format.
EBSCO Open Dissertations, a free database created by EBSCO and BiblioLabs, provides browsing and access to thousands of dissertations from around the world.
Shodhganga is a repository of Indian electronic engineering master's and doctoral theses.
Open Access Master's and Doctoral Dissertations (OATD) is a platform for open-access master's and doctoral dissertations published worldwide.
PQDT Open, a service offered by ProQuest, allows users to read the full text of open-access doctoral and master's theses for free.
Aperta is TÜBİTAK's open access archive.
Harman is the national archive of open archives of universities, public and research institutions in Turkey.
ArXiv is an archive for scholarly preprints in physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics.
The Confederation of Open Access Repositories (COAR) is a global archive of open access repositories from over 150 member and collaborating libraries, universities, research institutions, funding government agencies, and the like.
OAIster is a freely accessible archive containing over 25 million records from all disciplines and subjects, with contributions from more than 1,000 libraries, archives, and institutional archives.
OpenAIRE is a European open science organization/infrastructure providing a network of Open Access repositories, archives, and journals that support AE policies.
OpenDOAR is a global directory of open access knowledge repositories and policies from over 5,322 countries.
The Registry of Open Access Repositories (ROAR) lists and displays the development and status of open access repositories worldwide.
The Social Science Open Access Repository (SSOR) is a social science literature database run by the Leibniz Institute for Social Sciences that provides free access to over 55,000 publications.
Zenodo is an aggregating archive established by CERN, an OpenAIRE partner and a pioneer in open source, open access, and open data.
Archaeological Analytics is an open-access digital library for US and Canadian archaeological collections.
"Das Bundesarchiv" provides access to the digitized written resources of the Federal Archives.
The California Institute of Technology's "Caltech Archives" resources include a wide variety of materials, from manuscripts and photographs to audiovisual materials, books, fine art, and handcrafted items.
It is an interface for the digitized resources of the Bodleian Library, including manuscripts and maps.
Europeana provides access to over 50 million digitized items – books, music, artwork and more – from European archives, libraries and museums.
Gallica is the digital library of the Bibliothèque Nationale de France (BnF) and the national collector for the collections of French cultural heritage institutions. The collection includes printed materials (books, magazines, newspapers, sheet music and other documents), graphic materials (engravings, maps, photographs and others) and sound recordings.
The German Digital Library provides access to Germany's cultural and scientific heritage collection, comprising millions of books, archived materials, images, sculptures, musical works and other sound documents, as well as films and sheet music, from across Germany.
The Library of Congress Digital Collections is a digital library comprising manuscripts, photographs, audio recordings, musical scores, books, films, maps, and newspapers.
Maps, Globes & Plans is a collector's website for digital maps and atlases from several institutions, including the Library of Congress, Gallica,the British Library, the French Diplomatic Archives, the Moravian Library(Czech Republic), Harvard Library,and others.
OTA is an open archive containing high-quality digital resources for research and education in more than 25 languages.
Salt provides access to archival materials relating to Türkiye and its history through its Research, Art, Architecture and Design and City, Society and Economy collections.
The Turkish Grand National Assembly Digital Archive provides access to the digital resources of the Turkish Grand National Assembly Library and the outputs produced by legislative/oversight activities in the Turkish Grand National Assembly.
It is an online gallery of British Library resources such as vintage maps, virtual books, as well as exhibitions and important titles.
It is a collection of rare 16th and 21st-century maps of North and South America, as well as maps of the World, Asia, Africa, Europe, and Oceania. It contains over 150,000 maps.
It provides access to over 890,355 digitized items from the New York Public Library collections.
Created and operated with the support of the United States Library of Congress and UNESCO, the World Digital Library provides free access to 19,147 resources – manuscripts, rare books, maps, photographs and other important cultural documents – from 193 countries and cultures dating between 8000 BC and 2000 BC.