The Jointly Administered Knowledge Environment, or jake, was the first open source OpenURL link server.
Additionally, "Jake contains descriptions of 162 of the widely subscribed-to databases, search interfaces and free standing electronic services.
"[1] Jake was used by Simon Fraser University to create their own electronic resource management solution.
[3] As of July 14, 2009, the jake website now directs users to OCLC's WorldCat Link Manager (WCLM), an expensive subscription service that replicates what jake once offered for free.
The corresponding OCLC WorldCat Link Manager site now as of at least February 26, 2012 indicates that it has been retired.