An Open Access repository is a database or a virtual archive established to collect, disseminate and preserve scientific output like scientific articles and datasets and make them freely available. The action of depositing material in a repository is (self)archiving. Depending on personal preferences or publisher's policies, the author can make his work available in Open Access or (temporarily) restrict the access to it.
Repositories can be either linked to an institution or department or linked to a research field or subject, i.e. Institutional or Subject Repositories.
When using the OpenAIRE deposit service you will be guided through the steps of deposition and also if possible guided to a relevant repository (check out the list of compatible repositories). OpenAIRE uses data from the Directory of Open Access Repositories, OpenDOAR, and from the Registry of Research Data Repositories, Re3data.
Overview of repositories can be found on ROAR, OpenDOAR, Re3data.
Please visit the OpenAIRE helpdesk if you are having trouble finding the best suited repository for you. If you do not have a repository to deposit your article in then you can use the Zenodo repository, hosted by CERN.