The database includes the decisions from 1791-2018 (USA: Washington University 2009-20).

The Trans-Atlantic Slave Trade Database comprises 36,000 individual slaving expeditions between 1514 and 1866 (USA 2021).

The Direct Democracy Database allows users to explore the different ways direct democracy is used in different countries (International Institute for Democracy and Electoral Assistance IDEA Sweden 2018)

The Database provides access to data on the historical evolution of the world distribution of income and wealth, both within countries and between countries (2018-19).

Database of expert-curated debates (2021)

Readers can explore data on the United Nations Refugee Agency's persons of concern dating back to 1951 with the most recent data (as of this writing) being from 2017.

Der ʺWeltreport über Ungleichheitʺ einer Forschergruppe um Thomas Piketty attestiert Deutschland so viel Ungleichverteilung wie zuletzt 1913 (2020).

The GTD includes systematic data on domestic as well as transnational and international terrorist incidents between 2007 and 2017 (USA: University of Maryland 2019)

A real-time database with current estimates of real GDP growth for European countries (ETH Zürich 2023)

The private website provides a comprehensive database about political parties, elections and governments (2018).