Open Access E-Sources

Here we have collected for you some of the best free research websites and open access databases.


  • AlexanderStreet Digital Library of Classic Protestant Texts
    The Digital Library of Classic Protestant Texts gives researchers immediate, Web-based access to an extensive range of seminal works from the Reformation and post-Reformation eras.
  • Atla Digital Library
    Links to digital collections of participating libraries and organizations.
  • Atla Websites on Religion
    The Atla Websites on Religion LibGuide is a growing, selective, annotated collection of web resources for the study of religion.
  • Bielefeld Academic Search Engine (BASE)
    Voluminous search engine for academic open access web resources.
  • China Historical Christian Database
    Digital tool for the study of Chinese Christianity from 1550 to 1950.
  • Delpher
    Ruim 100 miljoen pagina's uit Nederlandse kranten, boeken en tijdschriften (inclusief levensbeschouwelijke uitgaven).
  • Digital Library of Abraham Kuyper
    The Digital Library of Abraham Kuyper contains Kuyper’s complete archive (over 100,000 pages), along with a comprehensive collection of his published works. This project has been developed in cooperation with the Historical Documentation Center for Dutch Protestantism at the Vrije Universiteit Amsterdam, where the physical archive is housed.
  • DigiTheo
    Digitized, 18th century, German journals and monographs.
  • FEET Blog
    Fellowship of European Evangelical Theologians/ European Journal of Theology.
  • Google Scholar
    Central search of scholarly literature, useful for finding titles of relevant materials.
  • Global Digital Library on Theology and Ecumenism
    The Global Digital Library on Theology and Ecumenism (GlobeTheoLib) is a multilingual online library offering access free of charge to full-text articles, journals, books and other resources on theology, intercultural and interreligious dialogue, ethics, and ecumenism in World Christianity.
  • Historical Texts
    One platform, over 460,000 late 15th to 19th century texts.
  • JStor Open Content
    Open and free content on JSTOR and Artstor.
  • Lucepedia
    (Dutch) Theological encyclopedia.
  • Open Access Digital Theological Library (OADTL)
    The mission of Open Access Digital Theological Library (OADTL) is to curate high-quality content in religious studies and related disciplines from publisher websites, institutional repositories, scholarly societies, archives, and stable public domain collections.
  • The Parchment Project
    Tools for studying the New Testament.
  • Post-Reformation Digital Library
    The Post-Reformation Digital Library (PRDL) is a select database of digital books relating to the development of theology and philosophy during the Reformation and Post-Reformation/Early Modern Era (late 15th-18th c.). Late medieval and patristic works printed and referenced in the early modern era are also included.
  • Project Muse (Open Access)
    Project MUSE offers open access (OA) books and journals from several distinguished university presses and scholarly societies. Through our open access hosting programs, we are able to offer publishers a platform for their OA content which ensures visibility, discoverability, and wide dissemination. These books and journals are freely available to libraries and users around the world.
  • The Queen Mary Centre for Religion and Literature in English
    Focuses on the history of Roman Catholicism, the Church of England, Protestant dissent, Methodism, and Judaism, including fulltext access to several books and all volumes of the journal Enlightenment and Dissent.
  • STEP Bible
    Scripture Tools for Every Person.
  • Theology Library KU Leuven - Maurits Sabbebibliotheek
  • Theology on the Web
    Access to biblical, historical and other theological resources.
  • Trismegistos
    An interdisciplinary portal of textual resources from the Ancient World (800 BC-AD 800). Also have a look at their partners.
  • Vandenhoeck & Ruprecht Verlage
    Vandenhoeck & Ruprecht Verlage including their brands Vandenhoeck & Ruprecht, Böhlau Verlag as well as V&R unipress with the cooperating university publishers offer their authors and editors the possibility to publish monographs, anthologies and journals as Open Access.
  • WorldCat
    Central search of worldwide library collections, useful for finding titles of relevant materials.


    Platform for academics to share research papers. Useful for open access to papers from scholars in theology and other fields.
  • Open Access Theses and Dissertations
    Open access graduate theses and dissertations published around the world.




Updated 18/08/2022.

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