Supplejack is DigitalNZ's tool for aggregating, searching and sharing metadata records. Supplejack can be used to collect metadata about millions of items, from hundreds of data sources, across many different data formats including: HTML, RSS, XML, OAI-PMH and RDF/XML. It transforms messy data, creates a unified search index and makes consistent metadata widely available via an open API data service. 

Supplejack was built using open source technology by DigitalNZ at the National Library of New Zealand.