Bulgaria:
- Hannah Arendt Center – Sofia
Czech Republic:
- Institute for the Study of Totalitarian Regimes
- Security Services Archive
Estonia:
- Estonian Institute of Historical Memory
- Unitas Foundation
Germany:
- Berlin-Hohenschönhausen Memorial
- Hannah Arendt Society
- Stiftung Sächsische Gedenkstätten
- The Federal Commissioner for the Records of the State Security Service of the former GDR
Hungary:
- The Public Foundation for the Research of Central and East European History and Society – House of Terror Museum
Latvia:
- The Occupation Museum Association of Latvia
- The Occupation of Latvia Research Society
Lithuania
- Secretariat of The International Commission for the Evaluation of the Crimes of the Nazi and Soviet Occupation Regimes in Lithuania
- Genocide and Resistance Research Centre of Lithuania
Netherlands:
- Foundation History of Totalitarian Regimes and their Victims
Poland:
- Institute of National Remembrance
- Warsaw Rising Museum
Romania:
- Institute for the Investigation of Communist Crimes and the Memory of the Romanian Exile
Slovakia:
- Jan Langos Foundation
Slovenia:
- Study Centre for National Reconciliation
Sweden:
- The Institute for Information on the Crimes of Communism
