OAIster was a project of the Digital Library Production Service of the University of Michigan University Library. Its goal is to create a collection of freely available, previously difficult-to-access, academically oriented digital resources that are easily searchable by anyone. OAIster harvests from Open Archives Initiative (OAI)-compliant digital libraries, institutional repositories, and online journals using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) protocol.
OAIster.worldcat.org is a freely accessible OCLC site for searching the millions of OAIster records alone. The records will continue to be indexed in OCLC's WorldCat, and will be integrated in WorldCat.org search results along with records from thousands of libraries worldwide. They also will continue to be included in WorldCat Local and WorldCat Local "quick start" search results, and will continue to be available on the OCLC FirstSearch service to Base Package subscribers, providing a complement to other FirstSearch databases.
See also 
- University of Michigan Digital Library Production Service
- "OAIster [OCLC]". Oclc.org. Retrieved 2012-09-04.
- The OAIster database, OCLC