OAIster

OAIster is a union catalog of millions of records that represent open access resources. This catalog was built through harvesting from open access collections worldwide, using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). Today, OAIster includes more than 50 million records that represent digital resources from more than 2,000 contributors. A freely accessible site for searching only OAIster records is available. Additionally, OAIster records are fully accessible through WorldCat.org and appear as WorldCat.org search results, along with records from thousands of libraries worldwide. The OAIster database is searchable on the OCLC FirstSearch service, providing another valuable access point for this rich database and a complement to other FirstSearch databases.