OAIster is a union catalog of millions of records representing open access resources that was built by harvesting from open access collections worldwide using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). Today, OAIster includes more than 25 million records representing digital resources from more than 1,100 contributors.
End user license agreement
This database is free to use even for none HH-affiliated staff and students. However, there may be restrictions in terms of full-text content.