CKANSoftware
The Comprehensive Knowledge Archive Network (CKAN) is a web-based open source management system for the storage and distribution of open data.
DrupalSoftware
Drupal is the #1 platform for web content management among global enterprises, governments, higher education institutions, and NGOs. Flexible and highly scalable, Drupal publishes a single web site or shares content in multiple languages across many devices. Technology and business leaders transform content management into powerful digital solutions with Drupal … backed by one of the world’s most innovative open source communities.
uDataSoftware
Customizable and skinnable social platform dedicated to (open)data.
DKANSoftware
DKAN is a comprehensive data management warehouse which can publish open data and create compelling map and graph-based visualizations. An open data portal modeled on CKAN. DKAN is a stand alone Drupal distribution that allows anyone to spin up an open data portal in minutes as well as two modules, DKAN Dataset and DKAN Datastore, that can be added to existing Drupal sites to add data portal functionality to an exist Drupal site.