Earth’s Largest Free Full-Text Science Archives

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1. HighWire Press

  —  2,144,393 free full-text articles as of 10/2/12
HighWire Press at Stanford University develops and maintains the Web versions of important journals in biomedicine and other disciplines. A list of journals with free full-text articles online is available. Request email notification when: HighWire launches new sites, announces significant back files online, etc; Publications change subscription policies;“Recent A–Z list” is updated.

2. The NASA Astrophysics Data System

  —  approximately 300,000 free full-text articles
The NASA Astrophysics Data System (ADS) is a NASA-funded project that provides free access to the full text of articles in astronomy and astrophysics. Most of the major astronomical journals are included. In many cases articles published in the current year are not available through ADS. Articles are available in PDF, GIF, or other electronic formats.






The rest of this list is presented alphabetically:


  •   —  current count of free full-text articles (formerly is a fully automated electronic archive and distribution server for research papers. Covered areas include physics and related disciplines, mathematics, nonlinear sciences, computational linguistics, and neuroscience. Both preprints and published papers are available. 
  • Centers for Disease Control and Prevention (CDC)
    The CDC Web site provides access to the full text of MMWR and other CDC publications and data archives. Publications are searchable through CDC Wonder. 
  • CogPrints
    An Open Archive of self-archived unrefereed preprints and refereed journal reprints in the Cognitive Sciences: Psychology, Neuroscience, Behavioral Biology, Linguistics, Artificial Intelligence, and Philosophy. CogPrints uses eprints self-archiving software developed at the Electronics and Computer Science Department of the University of Southampton. 
  • DOE Information Bridge
    The Information Bridge provides an open source to full-text and bibliographic records of United States Department of Energy (DOE) research and development reports in physics, chemistry, materials, biology, environmental sciences, energy technologies, engineering, computer and information science, renewable energy, and other topics. The Information Bridge consists of full-text documents produced and made available by the Department of Energy National Laboratories and grantees from 1995 forward. The site also provides a link to Energy Citations, a database that contains bibliographic records for energy and energy-related scientific and technical information from the Department of Energy and its predecessor agencies. 
  • GPO Access
    The United States Government Printing Office offers free access to the United States Constitution, the Code of Federal Regulations, the Federal Register, Congressional documents, U.S. Supreme Court decisions, and other documents. GPO also provides links to other U.S. government Web sites that offer full text resources. 
  • Inter-university Consortium for Political and Social Research (ICPSR)
    ICPSR is “the world’s largest archive of computerized social science data.” Data files are available to researchers at member institutions. 
  • National Academy Press
    Reports from the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council are available online free for the reading from the National Academy Press. 
  • National Center for Health Statistics (NCHS)
    NCHS publishes statistical reports on health related issues and is a major source of health statistics. Hundreds of publications, including the full text of “Health United States”, are available through the Web site. 
  • National Environmental Publications Internet Site (NEPIS)
    The National Environmental Publications Information System began in 1997, to offer over 9,000 full text, online documents of the United States Environmental Protection Agency. Documents that are not available online can be ordered from the agency through NEPIS. 
  • The National Science, Mathematics, Engineering, and Technology Education Digital Library (NSDL)
    This site is now under construction with funding from the National Science Foundation. The NSDL will offer high-quality materials for science, mathematics, engineering and technology education. Its initial release is scheduled for the fall of 2002. The NSDL is likely to be the largest and most heterogeneous digital library yet built. 
    NCSTRL is an international collection of computer science research reports and papers made available for non-commercial use from a number of participating institutions and archives. NCSTRL provides access to over 20,000 technical reports in computer science. 
  • Project Gutenberg Electronic Public Library
    Project Gutenberg produces electronic versions of texts in the public domain, mainly classic books. The project adds approximately 1,000 books per year. 
  • Psycoloquy
    An Open Archive of refereed reprints of all target articles, commentaries and responses from Psycoloquy, a peer-reviewed journal of Open Peer Commentary, sponsored by the American Psychological Association, indexed in PsycINFO, and published since 1990 (Archive is complete). 
  • PubMed Central
    The U.S. National Library of Medicine’s digital archive of life sciences journal literature. Access to PMC is free and unrestricted. 
  • ResearchIndex
    The NECI scientific literature digital library offers five million citations and over 400,000 full-text documents. Papers are derived from proceedings of symposia, journals, books, and other sources. Links to cited works and to comments from readers are available. 
  • Thomas Legislative Information on the Internet
    Through Thomas, the Library of Congress offers the text of bills in the United States Congress, the full text of the Congressional Record, House and Senate committee reports, and historical documents. 
    The UNESCO catalog lists 100,000 UNESCO documents and provides access to the full text of many of these. 
  • United States Geological Survey
    Reports and other publications of the United States Geological Survey are available through the USGS Web site. 
  • World Bank Group Documents & Reports
    The World Bank Group makes more than 14,000 documents available through the Documents & Reports website. Documents include Project appraisal reports, Economic and Sector Works, Evaluation reports and studies and working papers.

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