Official open data catalog of the Senate of Berlin. It was launched in September 2011. As of October 2011, it lists 21 datasets and 8 applications.

The catalog is built using the CKAN software.

The catalog itself is licensed under Open Data Commons Attribution (ODC-BY). It can be queried through the CKAN API of package:offenedaten, using the group berlin.

Most datasets are licensed under Creative Commons Attribution (CC-BY).