- The Ludwig von Mises Institute
- The Ludvig von Mises Institute – Europe
- The Ludvig von Mises Institute – Canada
- Bastiat Institute
- The Property and Freedom Society
- The Heritage Foundation
- The Cato Institute – see also Center for Educational Freedom
- Cato on Campus – Foundations of Liberty
- 4liberty – Freedom matters
- Learn about the ideas of a free society
- Libertarianism
- Libertarian News
- LearnLiberty
- The Library of Economics and Liberty
- Online Library of Liberty
- Freedom House
- Free the World
- The Hoover Institution
- Institute of Economic Affairs
- International Society for Individual Liberty
- International Policy Network
- Institute for Policy Innovation
- The Acton Institute
- Hayek Center for Interdisciplinary Research
- Competitive Enterprise Institute
- American Enterprise Institute
- Brookings Institutions
- Advocates for Self-Government
- Foundation for Economic Education
- The Center for Free Market Environmentalism
- Civil Society Coalition on Climate Change
- Small Business Survival Committee
- Against Crony Capitalism
- Shadow Government Statistics
