Anopen repository oropen-access repository is a digital platform that holds research output and provides free, immediate and permanent access to research results for anyone to use, download and distribute. To facilitateopen access such repositories must beinteroperable according to theOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH).Search engines harvest the content of open access repositories, constructing a database of worldwide, free of charge available research.^[1][2][3] Data repositories are the cornerstone for FAIR (findable, accessible, interoperable and reusable) data practices and are used expeditiously within the scientific community.^[4]

Open-access repositories, such as aninstitutional repository ordisciplinary repository, provide free access to research for users outside the institutional community and are one of the recommended ways to achieve theopen access vision described in theBudapest Open Access Initiative definition of open access. This is sometimes referred to as theself-archiving or "green" route to open access.

The benefits of open-access repositories are:

• Opening up outputs of the institution to a worldwide audience;
• Maximizing the visibility and impact of these outputs as a result;
• Showcasing the institution to interested constituencies – prospective staff, prospective students and other stakeholders;
• Collecting and curating digital output;
• Managing and measuring research and teaching activities;
• Providing a workspace for work-in-progress, and for collaborative or large-scale projects;
• Enabling and encouraging interdisciplinary approaches to research;
• Facilitating the development and sharing of digital teaching materials and aids, and
• Supporting student endeavours, providing access to theses and dissertations and a location for the development of e-portfolios.^[5]

The most frequently used repository software for open repositories according toOpenDOAR areDigital Commons,DSpace andEPrints.^[6] Other examples arearXiv,bioRxiv,Dryad,Figshare,Open Science Framework,Samvera,Ubiquity Repositories andinvenio (solution used byZenodo).

• Current research information system
• Digital library
• Digital asset management
• Library publishing
• Open-access archives
• Open access around the world
• List of academic databases and search engines
• ROARMAP

Scholia has atopic profile forOpen-access repository.

• Peter Suber (ed.)."(Repositories)".Open Access Tracking Project. Harvard University.OCLC 1040261573.News and comment from the worldwide movement for open access to research
• Open repositories

• Online archives
• Open-access archives
• Open access (publishing)
• Communication
• Academic publishing
• Research

• CS1: unfit URL
• Articles with short description
• Short description is different from Wikidata
• Use dmy dates from September 2023