Dublin Core, short for the Dublin Core Metadata Element Set, is an interdisciplinary metadata standard recognized by the National Information Standards Organization (NISO) and the International Organization for Standardization (ISO). The set of elements are used for describing and cataloging of a wide variety of information sources, including electronic, which would not as easily be described with conventional library standards. Since the 1990’s, there has been a rapid increase of new such resources to be cataloged, including digital images and text, audio and video files, websites and webpages, spreadsheets and computer files. This paper discusses the elements and benefits of Dublin Core, in comparison to MARC, and examples of its uses outside the traditional library setting.