Service	Institution	Contact	Description
LDC Service Provider	Linguistic Data Consortium	Steven Bird	An OLAC search engine modelled after google, developed at the University of Melbourne by Amol Kamat, Steven Bird and Baden Hughes.
Linguist List OLAC Gateway	The Linguist List	Helen Aristar Dry	The Gateway to OLAC Archives hosted on the Linguist List Website, permitting search on all OLAC archives with special support for language identification.

OLAC Infrastructure Services

The following services support the operation of OLAC.

Archive Registration	A service for validating and registering OLAC archives.
Service Registration	A service for registering end-user services based on OLAC metadata.
Freestanding Metadata	A service for validating and formatting an OLAC metadata record.
Static Repository Gateway	A service for generating OAI Protocol responses from an XML file.
OLAC Aggregator	A service that provides a repository containing the records from all other registered OLAC repositories, incorporating an OLAC-DC crosswalk and a query function.
Viser	A virtual service which allows language resource sites to post services based on OLAC metadata without having to harvest metadata or develop a user interface.

OLAC Utility Services

The following services support the developers of OLAC archives, and are provided on the OLAC Tools page.

• Plain text search on all harvested metadata.
• Resolve an identifier to a record.
• Survey of metadata element usage.