CKANCon 2015
Michael Easter files this report from a trip to Ottawa:
CKAN is a web-based, open-source data management system, maintained by the Open Knowledge Foundation. It powers many data catalogues around the world, including some heavy-hitters: Data.gov.uk , Data.gov in the United States, and the federal Open Data portal in Canada.
It is primarily written in Python, using PostgresSQL to store meta-data about data sets, and Apache Solr as a search engine.