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)

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

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).

Online database of over 34 million chemical structures (UK 2017)

The Voter Turnout Database is the best resource for a wide array of statistics on voter turnout from around the world. It contains the most comprehensive global collection of voter turnout statistics from presidential and parliamentary elections since 1945. (International Institute for Democracy and Electoral Assistance IDEA, Sweden 2018)