Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Omeka is a free, open source web publishing system for online digital archives, and uses an unqualified Dublin Core metadata standard. Completely web-based, it allows users to publish cultural heritage objects, extend its functionality with themes and plugins, and curate online exhibits with digital objects. A light-weight solution in comparison to traditional institutional repository software like DSpace, Omeka has a focus on display. Its software is currently being used by the New York Public Library, the Newberry Library, as well as many small museums and historical societies. The Missouri School of Journalism uses Omeka to share their archive of 38,000 photographs from the Pictures of the Year International contest.