DKAN is an open data portal built in Drupal. DKAN is designed to be feature-compatible with CKAN, the Open Data portal built by the Open Knowledge Foundation. With DKAN, you can:
Easily publish datasets in key machine readable formats including JSON, XML, RDF and more
Share datasets through an API
Manage the importing of large datasets
Presentation by Andrew Hoppin, co-founder and president of NuCivic