On July 27, 2009 OCLC upgraded their PURL server to a new open source platform built by Zepheira. PURLs are Web addresses or Uniform Resource Locators (URLs) that act as permanent identifiers in the face of a dynamic and changing Web infrastructure. OCLC’s upgrade reflects their continued support to provide persistent, stable World Wide Web (WWW) addresses for the international library and education community, government, business, and non-profit organizations, and private citizens. OCLC’s PURL server currently resolves approximately two million PURLs per day.
The new PURL software developed by Zepheira reflects current Web architecture as defined by the World Wide Web Consortium (W3C). This new software provides the ability to permanently identify networked information resources, such as Web documents, as well as non-networked resources such as people, organizations, concepts and scientific data. This capability will represent an important step forward in the practical ability to support “linked data” across application, enterprise and community boundaries.