Open Access (OA) Publications


  1. Journal Articles
  2. PrePrints
  3. eBooks
  4. Open Textbooks
  5. Open Education Resources (OER)
  6. Other Research Portals
  7. Theses and Dissertations
  8. Institutional Repositories
  9. Links to More Resources
  10. Free Online Learning
  11. Support for Open Access Initiatives at MacOdrum Library and Carleton University

Journal Articles

  • Biomed Central (BMC) Primarily science and engineering, part of Springer Nature
  • CORE Attempts to aggregate all open access research outputs from repositories and journals worldwide 
  • DOAJ (Directory of Open Access Journals) Search international, peer-reviewed Journals
  • Frontiers Focus on the sciences
  • JURN Scholarly works and other publications from the arts, humanities, and sciences
  • Paperity Multi-disciplinary and multi-lingual aggregator of OA journals and papers
  • PeerJ Medical, Biology, Computer Science, Chemistry, Materials Science
  • PLOS (Public Library of Science) Research focused on medicine and science
  • PubMed Central (PMC) Biomedical and Life Sciences
  • RePEc (Research Papers in Economics) Working papers, journal articles, books, chapters, and software components
  • Semantic Scholar Search for academic publications using machine learning techniques from PubMed, Nature, ArXiv, and more
  • SSRN (Social Science Research Network) Search or browse abstracts and/or full-text, including conference proceedings

Unpaywall browser extension - install this in your browser for when you encounter an inaccessible commercial journal article -- it will automatically search for OA versions (including pre-prints) from Unpaywall's index of repositories

PrePrints [and e-Prints (pre- and post-Prints)]

  • agriRxiv Preprints for Agriculture and Allied Sciences
  • Focus on Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance, and Statistics
  • bioRxiv Preprint server for Biology
  • ChemRxiv Preprint server for Chemistry
  • Earth ArXiv Preprint service for the Earth sciences
  • ESSOAr Earth and Space Science Open Archive
  • f1000Research Portal to discipline-focused preprint communities
  • medRxiv The preprint server for health sciences
  • OSF Preprints Portal to discipline-focused preprint communities
  • Preprints Multidisciplinary Preprint Platform
  • Research Square Multidisciplinary Preprint Platform
  • TechRxiv Preprints in Technology Research
  • Alternative to
  • zenodo Repository for research data and preprints


  • DOAB (Directory of Open Access Books) Peer-reviewed books from international academic publishers
  • FreeTechBooks Computer Science, Engineering, and Programming
  • IntechOpen Peer-reviewed OA books in STEM
  • LibriVox Audio recordings of public domain books
  • The National Academies Press Published reports from the National Academies of Sciences, Engineering and Medicine (U.S.)
  • OAPEN (Open Access Publishing in European Networks) Open access, peer-reviewed books
  • The Online Books Page Searchable indices by author, title, or subject
  • Open Library Classic literature, including books in accessible formats
  • Open Research Library (ORL) comprehensive, multidisciplinary collection of peer-reviewed OA books
  • Project Gutenberg Books on a variety of subjects, in multiple languages
  • Standard Ebooks Free public domain ebooks which are open source and accessible

Open Textbooks

Open Education Resources (OER)

Other Research Portals

  • AfricArXiv Digital archive for African research, working towards building an African-owned open scholarly repository
  • BASE (Bielefeld Academic Search Engine) Academic content from around the world in a variety of formats
  • CiteSeerSearch engine for computer and information science literature freely available on the web
  • Dimensions Articles, chapters, preprints, and datasets linked through a single platform including publication metrics and altmetrics
  • Dryad Curates freely reusable data underlying scientific publications
  • figshare Multidisciplinary repository for various formats of research output
  • Google Scholar Index of scholarly literature with citation metrics
  • Hathi Trust Repository for digitized content from libraries and other research institutions around the world
  • Internet Archive Variety of digital content, including books, audio, video, software...
  • Internet Archive - Scholar Research articles and other scholarly documents
  • Linking the world's patents to scholarly, technical, regulatory, and business data and literature
  • Microsoft Academic Uses semantic searching to explore topics, publications, conferences, authors, and institutions, linking out to OA sources when available
  • NASA Scientific and Technical Information Program Scientific and technical aerospace research
  • OAIster Embedded into WorldCat, provides access to resources in open-archive collections
  • OASIS Search engine for multiple open content sources
  • Open DOAR (The Directory of Open Access Repositories) Offers the ability to search for repositories by subject, country, language, type, or actually search the content of all indexed repositories
  • Open Library of Humanities (OLH) Hosted academic journals in the humanities
  • OSTI.GOV U.S. Department of Energy
  • PhilPapers Index of research content in philosophy from journals, books, archives, and researcher homepages
  • Registry of Open Access Repositories Search by country and repository type--or browse using this interactive map
  • SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics) Partnership of libraries, funding agencies, and research centres around the world -- focused on high-energy physics
  • Synergies Canada's SSH Research Infrastructure

Theses and Dissertations

  • DART - Europe European research theses and dissertations
  • EBSCO Open Dissertations linking institutional repositories worldwide
  • EThOS Theses and dissertations from the UK
  • NDLTD (Networked Digital Library of Theses and Dissertations) International theses and dissertations--or target regional repositories here
  • OATD (Open Access Theses and Dissertations) International theses and dissertations
  • PQDT Open Full-text theses and dissertations from ProQuest
  • Theses Canada Portal Search Canadian theses and dissertations, including those with electronic access

Institutional Repositories

Links to More Resources

eBook in our collection: Searching the Grey Literature: A Handbook for Searching Reports, Working Papers, and Other Unpublished Research

  • includes additional links and descriptions to various repositories:
    • International (including government)
    • Health
    • Patents
    • Environment
    • Policy
    • Clinical trials, and more...

Free Online Learning

Support for Open Access Initiatives at MacOdrum Library and Carleton University

Content last reviewed: May 13, 2021