An open-source software platform for creating data portals, built and maintained by Open Knowledge. CKAN is used as the official data-publishing platform of around 20 national governments and powers many more local, community, scientific and other data portals. Notable features are configurable metadata, user-friendly web interface for publishers and data users, data preview, organisation-based authorisation levels, and APIs giving access to all features as well as data access. Source: ODH

A data management system that makes data accessible by providing tools to streamline publishing, sharing, finding and using data. CKAN is aimed at data publishers (national and regional governments, companies and organisations) working to make their data open and available.

Source: http://ckan.org/