The Open Archives Initiative develops and promotes interoperability standards that aim to facilitate the efficient dissemination of content.
- OAI Protocol for Metadata Harvesting (OAI-PMH)
- NSDL has an extensive wiki of OAI Best Practices
- OAI Repository Explorer
- UIUC Experimental OAI Registry
To work properly with Google sitemaps, it is best to keep the OAI provider and PURL server on the same physical machine.
The PROAI provider included with Fedora 2.1 looks very promising.
IU OAI providers: