DKAN is a Drupal based open source project that makes it easier to publish Open Data. If your question is not closely related to programming, please consider asking your question on https://opendata.stackexchange.com.
DKAN is a Drupal based open source project that makes it easier to publish Open Data. It is a complimentary offering to CKAN (another open source Open Data project that currently has a SO tag) in the effort to make data more open and accessible. There's also the major difference that DKAN is built on PHP, where as CKAN is built on Python.