Open Access Resources

This is a selection of open access repositories, directories, and data sources that are outside of BU. In addition to full-text publications, some of these resources include open access software, data sets, and images as well as tools for citation and other analyses.

Open access to over 1.5 million e-prints in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. arXiv is owned and operated by Cornell University, with additional funding from Simons Foundation and member institutions. 


BMC was founded in 1999 and is part of Springer Nature. The collection includes 300 peer-reviewed journals in science, technology, engineering and medicine.

DOAB: Directory of Open Access Books

The DOAB is based at the National Library in The Hague, Netherlands, and features over 17,216 Academic peer-reviewed books and chapters from 317 publishers.

Directory of Open Access Journals (DOAJ)

DOAJ is an independent, community-curated online directory that indexes and provides access to nearly 14,000 high quality, open access, peer-reviewed journals.

Internet Archive was started in 1996 and is a non-profit library of millions of free books, movies, software, music, websites, and more. 

MDPI Open Access

MDPI is an academic open access publisher based in Basel, Switzerland. MDPI currently publishes 205 journal titles across a wide range of disciplines and is continuously expanding its portfolio. 

RePEc (Research Papers in Economics) 

RePEc is an international decentralized bibliographic database of working papers, journal articles, books, book chapters and software components, all maintained by volunteers. The collected data are then used in various services including blog aggregation, citation analysis, field directories, as well as full text publications in economics and related fields.

The Registry of Open Access Repository Mandates and Policies (ROARMAP)

ROARMAP is a searchable international registry charting the growth of open access mandates and policies adopted by universities, research institutions and research funders that require or request their researchers to provide open access to their peer-reviewed research article output by depositing it in an open access repository.


OAIster is a union catalog of records for open access resources. It was built through harvesting open access collections worldwide using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). As of 2019, OAIster included more than 50 million records representing digital resources from more than 2,000 contributors.


Openly Available Sources Integrated Search (OASIS) is a search tool that is being developed at SUNY Geneseo’s Milne Library. It aims to make the discovery of open content easier. OASIS currently searches open content from 90 different sources and contains 364,699 records.

OpenDOAR: Directory of Open Access Repositories

OpenDOAR is a global directory of academic open access repositories. It includes a statistical analysis of repositories by language, subject, and platform. It has a policy generation tool and an API for working with metadata.

OSF Preprints

Subject-based repositories maintained by the Center for Open Science. Disciplines include architecture, arts, humanities, business, education, engineering, law, life sciences, medicine, health sciences, physical sciences, mathematics, social sciences, and behavioral sciences.

Collection of search tools maintained by the U.S. Department of Energy (DOE), Office of Scientific and Technical Information (OSTI). Find research and development (R&D) results emanating from DOE funding including data, software, patents, and videos.

PubMed Central

PMC is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health’s National Library of Medicine (NIH/NLM).