What is CORE?

CORE (COnnecting REpositories) provides a comprehensive bibliographic database of the world’s scholarly literature, collecting and indexing research from repositories and journals. It is, to our knowledge, also the world’s largest collection of full text open access research papers. CORE is a not-for-profit service dedicated to the open access mission and one of the signatories of the Principles of Open Scholarly Infrastructures POSI.

We serve the global network of repositories and journals increasing discoverability and preventing misuse of their content; making metadata records uniquely identifiable and resolvable with decentralised PIDs; supporting data providers in adopting good practices by providing tools for metadata validation, content management, enrichment and OA compliance; and facilitating machine access to open research.

Our services support a wide range of stakeholders in getting scalable access to our vast and comprehensive collection of data, specifically researchers, the general public, academic institutions, developers, funders as well as companies from a diverse range of sectors including but not limited to innovators, AI technology companies, digital library solutions and pharma.


CORE’s mission is to index all research worldwide and deliver unrestricted access for all.

In doing so, we:

  • enrich scholarly data using state-of-the-art text and data mining technologies to aid discoverability,
  • enable others to develop new tools and use cases on top of the CORE platform,
  • support the network of open access repositories and journals with innovative technical, solutions and,
  • facilitate a scalable, cost-effective route for the delivery of open scholarship.

How it works

CORE indexes research papers from data providers including institutional and subject repositories, preprint servers, and open access and hybrid journals.

CORE currently contains 295M open access articles collected from 11K data providers around the world.



  • Petr Knoth's photo
    Petr Knoth
    Founder & Head of CORE

    Responsible for leading the team, development & research effort, funding and product strategy. Believes in free unrestricted access to research for all. Developed the first CORE prototype in 2010. Excited by improving machine access to scientific literature to support text and data analysis.

  • Valeriy Budko's photo
    Valeriy Budko
    Full Stack Developer

    PHP and JavaScript developer. Performs code optimization and implementation of continuous integration. In his spare time, he upgrades a long-range quadrocopter to monitor environmental conditions.

  • Matteo Cancellieri's photo
    Matteo Cancellieri
    Lead Developer (Backend)

    Works on improving and and maintaining CORE services. He is a detail knowledge base of all CORE services. Has been developing for CORE for several years and Continuous Integration secret lover. Once he was a Super Mario plumber.

  • Ekaterine Chkhaidze's photo
    Ekaterine Chkhaidze
    Front-end developer

    Responsible for creating fascinating user interface and transforming design into website. Outside work she enjoys crocheting, playing board games (owns a collection actually), and baking.

  • Suchetha N.Kunnath's photo
    Suchetha N.Kunnath
    PhD Student

    Suchetha’s research focusses on the classification of citations based on their purpose and influence. The main areas of research interest include Text Mining, Machine Learning and Natural Language Processing. Outside of work, she likes to travel and experiment with photography.

  • Viktoriia Pavlenko's photo
    Viktoriia Pavlenko
    UX designer

    Design is my passion. Creating a design that fits users' needs is my task number 1. Deep diving into user research and finding pain points helps me to make better products.

  • David Pride's photo
    David Pride
    Research Associate

    After completing the PhD, working on observing the Matthew Effect in open science and the ramifications for responsible research metrics.

  • Halyna Torchylo's photo
    Halyna Torchylo
    Personal & Team Administrative Assistant

    Responsible for handling correspondence, managing calendars and\ appointments, arranging calls, collecting and processing information from external resources,\ liaising with the team, suppliers and clients.  She enjoys languages, boardgaming, reading, and mountain skiing when free.

  • Andrew Vasiliev's photo
    Andrew Vasiliev
    System Administrator

    Responsible for supporting and maintaining servers. Testing, deploying, and setting up tools to improve CORE performance. Lover of automatizing routine.

  • Anton Zhuk's photo
    Anton Zhuk
    Back-end developer

    Works on improving and supporting backend systems. Besides the work, he enjoys listening to EDM music, playing TBS games and reading books. Dreams of travelling across North America.

  • Michael Upshall's photo
    Michael Upshall
    Community and Outreach Manager

    After several years working with AI companies making use of scholarly corpora, I have the chance to work with a corpus directly! I’m fascinated to learn more from our current and potential users of CORE, whether in institutions or corporate environments. I’ve been involved in scholarly publishing for more years than I care to remember, including writing and presenting, but I like best meeting people at face-to-face events (remember those?) and helping to discover how technology can solve business problems. [email protected]

Past team members

  • Aristotelis Charalampous
  • Drahomira Herrmannova
  • Alexander Huba
  • Catherine Kuliavets
  • Bethany Walker
  • Anna Zelinska
  • Giorgio Basile
  • Bikash Gyawali
  • Tomas Korec
  • Dominika Koroncziova
  • Magdalena Krygielova
  • Jakub Novotny
  • Gabriela Pavel
  • Ian Tindle
  • Lucas Anastasiou
  • Jozef Harag
  • Sergei Misak
  • Samuel Pearce
  • Nancy Pontika
  • Svetlana Rumyanceva
  • Vladislav Shymanovich
  • Maria Tarasiuk
  • Kostiantyn Voskoboinik
  • Viktor Yakubiv
  • Vojtech Robotka
  • Zdenek Zdrahal

Resources and promotional materials


Check our join guidelines.

Please submit your request on the article update page.

Go to our key register page. Make sure you have covered all the relevant information about the API available on our website.

To discuss project and research collaborations or if you represent an industry partner interested in using CORE in your work, please contact:

Prof. Petr Knoth
Knowledge Media institute, The Open University
Walton Hall, Milton Keynes, MK7 6AA, BUCKS, United Kingdom
petr (dot) knoth (at) open (dot) ac (dot) uk

For any other question or enquiry about CORE you will probably find an answer in our FAQs.

For any questions that have not yet been answered in the FAQs, you can contact us by email. Please note that as we are receiving very high volumes of requests, we are unable to answer questions or deal with requests that fall into the above categories, such as requests to update or remove an article. Such requests will not be answered through this route. However, if your request falls outside of the above categories, you can email us and we will reply when we can.