A few classical liberal websites :
Digital Freedom network
Tech central Station
Albania
Albanian Liberal Institute
Austria
Friedrich Hayek Institut
BelgiumBenelux Ludwig von Mises Institute
Center for the New Europe
Institut Molinari
Nova Civitas
Bulgaria
Institute for Market Economics
France
Bastiat.org
Centre de Recherche Jean Baptiste Say
Contribuables Associés
Institut Français pour la Recherche sur l’Administration Publique (iFrap)
Institut Euro 92
Institut Turgot
Institut de Recherches en Economie et Fiscalité (IREF)
Journal des Economistes et des Etudes Humaines (JEEH)
Liberté Chérie
Libres.org
Germany
Friedrich Naumann Stiftung
Institut für Unternehmerische Freiheit
Italy
Centro Einaudi
International Center for Economic Reasearch (ICER)
Istituto Bruno Leoni
Lithuania
Lithuanian Freemarket Institute
Montenegro
Centre for Entrepreneurship and Economic Development
Poland
Adam Smith Center
Romania
Center for Institutional Analysis and Development (CADI)
Mises Institute
Centrul Independent pentru Studii in Economie si Drept (CISED)
Slovakia
The F.A. Hayek Foundation
Sweden
Timbro
Switzerland
Liberales Institut
Swiss Confederation Institute
The Netherlands
Frédéric Bastiat Stichting
The Czech Republic
Liberalni Institut
Turkey
Association for Liberal Thinking
U.K.
Adam Smith Institute
Institute for Economic Affairs (IEA)
LSE Hayek Society
Oxford Hayek Society
Stockholm Network
In North America:
Acton Institute
American Enterprise Institute
Atlas Foundation
Cato Institute
Econlib
Economic thinking
Foundation for Economic Education
Fraser Institute
Free Market Network
Fund for American Studies
Hayek Center
Heritage Foundation
Independent Institute
Institut Economique de Montréal
Institute for Humane Studies
Laissez-Faire Books
Liberty Fund
Political Economy Research Center
In South America:
Centro Interdisciplinar de Etica e Economia Personalista