# Repository registries **International Registries** * [Directory of Open Access Repositories](http://v2.sherpa.ac.uk/opendoar/) (OpenDOAR): OpenDOAR is the quality-assured global directory of academic open access repositories. It enables the identification, browsing and search for repositories, based on a range of features, such as location, software or type of material held * [Registry of Open Access Repositories](http://roar.eprints.org) (ROAR): ROAR is to promote the development of open access by providing timely information about the growth and status of repositories throughout the world. * [re3data](https://www.re3data.org/search) provides detailed information about over 2,000 research data repositories. **Platform Specific Registries** * [DSpace User Registry](http://registry.duraspace.org/registry/dspace) is a searchable repository listing of dspace platforms around the world --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://coartraining.gitbook.io/coar-repository-toolkit/discoverability/repository-registries.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.