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Open Source Databases

The following list of databases are free and open sources resources available to all members of the Mercyhurst community and the public. Contact the Electronic Resources Librarian for more information.


A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z


Academic Journals - Open Access

Provides free access to research information to the international community. All the journals from this organization will be freely distributed and available from multiple websites. This organization strongly believes that the open access model will spur research across the world especially as researchers gain unrestricted access to high quality research articles.

ABYZ News Links is a directory of links to online news sources from around the world. It is organized on a geographical basis. It contains links to newspapers and other sites with news content such as broadcast stations, internet services, magazines, and press agencies. Please note that ABYZ News Links does not contain any actual news content.  It only contains links to news sources.

Open Access Journals in the Field of Education.

American Factfinder

Provides access to data about the United States, Puerto Rico and the Island Areas based on  several censuses and surveys.

Bentham Open (Science)

Bentham Open publish over 230 plus peer-reviewed open access journals. These free-to-view online journals cover all major disciplines of science, technology, medicine and social sciences.

BioMed Central

BioMed Central is an STM (Science, Technology and Medicine) publisher which has pioneered the open access publishing model. BioMed Central views open access to research as essential in order to ensure the rapid and efficient communication of research findings. A portfoliio of 265 journals, all research articles in BioMed Central's journals receive rapid and thorough peer review.


A free online archive and distribution service for unpublished preprints in the life sciences, operated by Cold Spring Harbor Laboratory.

Bureau of Justice Statistics

Searchable statistical reports on all aspects of criminal justice in the US.


ChemSpider is a free chemical structure database providing fast access to over 34 million structures, properties and associated information.

Chronicling America: Historic American Newspapers

Chronicling America: Historic American Newspapers allows you to search and view newspaper pages from 1880-1910 and find information about American newspapers published between 1690-present. Chronicling America is sponsored jointly by the National Endowment for the Humanities and the Library of Congress as part of the National Digital Newspaper Program (NDNP).

C.I.A. World Factbook

The World Factbook provides information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 267 world entities. Our Reference tab includes: maps of the major world regions, as well as Flags of the World, a Physical Map of the World, a Political Map of the World, a World Oceans map, and a Standard Time Zones of the World map.

Cochrane Library

Most articles are not free, but many are open access. 


Information on over 400,000 chemicals including synonyms, structures, and regulatory  information from the National Library of Medicine, National Institutes of Health.

DOAB - Directory of Open Access Books

The primary aim of DOAB is to increase discoverability of Open Access books. The directory will be open to all publishers who publish academic, peer reviewed books in Open Access.

DOAJ - Directory of Open-Access Journals

Free, full text, quality controlled scientific and scholarly journals, covering a variety of subjects and languages.

eMedicine Health

eMedicine Health is a consumer health information site that was launched by the doctors of (now Medscape Reference). The site contains over 900 health and medical articles with a focus on emergency medicine, written by physicians for patients and consumers.

Environmental Impact Statement (EIS) Database  

The Environmental Impact Statement (EIS) Database provides information about EISs prepared by federal agencies, as well as EPA's comments concerning the EISs.

Feminae:  Medieval Women and Gender Index  

Covers journal articles, book reviews, and essays in books about women, sexuality, and gender during the Middle Ages. Because of the explosion of research in Women's Studies during the past two decades, scholars and students interested in women during the Middle Ages find an ever-growing flood of publications.

Free Medical Journals

Some of the most important medical journals available online, free and in full-text.

GPO – U.S. Government Publishing Office

The U.S. Government Publishing Office (GPO) is the Federal Government’s official, digital, secure resource for producing, procuring, cataloging, indexing, authenticating, disseminating, and preserving the official information products of the U.S. Government.

HathiTrust’s Digital Library 

Since we are not a partner institution, partner specific authenticated services will not be available to you.  However, you can search and access fully viewable materials in HathiTrust, and download materials where there are no third-party restrictions (see Why isn't full-PDF download publicly available for all viewable volumes? for more information). You can also sign up for a University of Michigan "Friend Account" in order to login and save personal collections of materials. More information on Friend accounts can be found here: See the User's Guide to HathiTrust on our Resources page for a general introduction to searching, browsing, and creating collections of materials in HathiTrust.

HLAS Online:  Handbook of Latin American Studies     

The Handbook is a bibliography on Latin America consisting of works selected and annotated by scholars. Edited by the Hispanic Division of the Library of Congress, the multidisciplinary Handbook alternates annually between the social sciences and the humanities. Each year, more than 130 academics from around the world choose over 5,000 works for inclusion in the Handbook.

Historic American Newspapers

Contains historic newspapers from 1836-1922 and a U.S. Newspaper Directory for American newspapers published between 1690-present. Website produced by the National Digital Newspaper Program in partnership with the National Endowment for the Humanities and the Library of Congress.

ICPSR maintains a data archive of more than 500,000 files of research in the social sciences. It hosts 16 specialized collections of data in education, aging, criminal justice, substance abuse, terrorism, and other fields.


The world's largest multidisciplinary open access publisher of books covering the fields of science, technology and medicine.

Internet Archive

A non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.


Jurn is a unique search tool which helps you find free academic articles and books. Established in 2009 to comprehensively cover the arts and humanities, in 2014 JURN expanded in scope. JURN now also covers selected university fulltext repositories and many additional ejournals in science, biomedical, business and law. In 2015/6 JURN expanded again, adding over 600 ejournals on aspects of the natural world.


The LatAmPlus collection launches with 15 peer reviewed journals in Spanish specialized in Latin American and Caribbean Humanities and Social Sciences.

Louvre Images

Making of America Journals

Making of America (MOA) is a digital library of primary sources in American social history primarily from the antebellum period through reconstruction. The collection is particularly strong in the subject areas of education, psychology, American history, sociology, religion, and science and technology. The book collection currently contains approximately 8,500 books with 19th century imprints.


The National Library of Medicine's database containing over 11 million references and abstracts in the field of Medicine.


Medscape from WebMD offers specialists, primary care physicians, and other health professionals the Web's most robust and integrated medical information and educational tools. After a simple, 1-time, free registration, Medscape offers original, professional medical content, including review articles, journal commentary, expert columns, patient education articles, book reviews, and more.

National Criminal Justice Reference Service

NCJRS is a federally funded resource offering justice and substance abuse information to support research, policy, and program development worldwide.

NewspaperCat - Catalog of Digital Historical Newspapers

NewspaperCat is an online database providing links to over 1000 full-text digital newspapers in the United States and Caribbean. The project's current coverage, which began with the Southeastern United States, is growing rapidly and will soon cover all fifty states. The purpose of NewspaperCat is to improve access to historical newspapers digitized by libraries, archives, historical societies and other non-profit organizations.

NYPL Digital Collections  

This site is a living database with new materials added every day, featuring prints, photographs, maps, manuscripts, streaming video, and more.

National Archive of Criminal Justice Data

Data collections relating to criminal justice from federal and state agencies, and grant-funded projects. Provides documentation, and browsing and downloading access to most of the data.

Newspaper Archives

Freely available list of newspaper archives.


A collection of freely available, previously difficult-to-access, academically-oriented digital resources that are easily searchable by anyone through WorldCAT. OAIster retrieves these otherwise elusive resources by tapping directly into the collections of a variety of institutions using harvesting technology based on the Open Archives Initiative (OAI). Developed at the University of Michigan's Library.A collection of freely available, previously difficult-to-access, academically-oriented digital resources that are easily searchable by anyone through WorldCAT. OAIster retrieves these otherwise elusive resources by tapping directly into the collections of a variety of institutions using harvesting technology based on the Open Archives Initiative (OAI). Developed at the University of Michigan's Library.

OpenDOAR - The Directory of Open Access Repositories

OpenDOAR is an authoritative directory of academic open access repositories. Each OpenDOAR repository has been visited by project staff to check the information that is recorded here. This in-depth approach does not rely on automated analysis and gives a quality-controlled list of repositories.

Open Knowledge Repository - World Bank

The World Bank is the largest single source of development knowledge.  Through the OKR, the World Bank collects, disseminates, and permanently preserves its intellectual output in digital form.  Since its launch in April 2012, the OKR has grown to more than 13,000 research works. Browse annual reports, books, journals, serial publications, working papers, economic and sector work studies.  Multilingual content is available.

Online Books Page

Provides author, title, and subject access to hundreds of thousands of non-copyrighted online books freely available on the Web.

PLOS: Public Library of Science

PLOS is a non-profit offering public access to titles in science and medicine. Since 2003 they have published a variety of journals, including PLOS Biology and PLOS Medicine, which rival existing elite titles such as Science and Nature
Pubmed Central

PubMed Central (PMC) is the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature.

Science Direct

Science Direct offers a growing amount of open access journals and open access articles that are fully peer reviewed in the field s of science, technology and medicine.

“ is a gateway to more than 42 scientific databases and 200 million pages of science information with just one query, and is a gateway to more than 2,000 scientific websites from 18 organizations within 14 federal science agencies. These agencies represent 97% of the federal R&D budget. is the portal to science and the U.S. contribution to"

Social Science Research Network

The SSRN eLibrary consists of two parts: an Abstract Database containing abstracts on over 395,400 scholarly working papers and forthcoming papers and an Electronic Paper Collection currently containing over 324,600 downloadable full text documents in Adobe Acrobat pdf format. The eLibrary also includes the research papers of a number of Fee Based Partner Publications.

Stanford Encyclopedia of Philosophy

Entries are maintained and kept up to date by experts in the field. Access is unlimited and free to everyone.

Your Online Guide to government information and services. 


WebMed Central

WebmedCentral believes biomedical publishing does not keep up the pace with technological advancements. Therefore, Webmed Central publishes all articles without prior peer review in a climate of post publication peer review led by authors but supported by a team of advisors.

World Bank Initiative 

The World Bank's Open Data initiative is intended to provide all users with access to World Bank data, according to the Open Data Terms of Use. The data catalog is a listing of available World Bank datasets, including databases, pre-formatted tables, reports, and other resources. The World's Largest Library Catalog lets you search the collections of libraries in your community and thousands more around the world.

Wolfram Alpha

A computational knowledge engine or an answer engine developed by Wolfram Research. It is an online service that answers factual queries directly by computing the answer from externally sourced "curated data", rather than providing a list of documents or web pages that might contain the answer as a search engine might.  Users submit queries and computation requests via a text field. Wolfram Alpha then computes answers and relevant visualizations.

World Health Organization Statistical Information System

A guide to health and health-related statistical information from the World Health Organization. Includes statistics on AIDS/HIV and other diseases.