- Alliance Magazine
- Annie E. Casey Foundation
- Arabella Advisors
- Association of Charitable Foundations (ACF)
- Barr Foundation
- BCG Perspectives
- Beyond Philanthropy
- Big Society Capital
- Bridgespan Group
- CAF Venturesome
- Case Foundation
- Center for Philanthropic Studies at VU University Amsterdam
- Center for Strategic Philanthropy and Civil Society at Duke University Sanford School of Public Policy
- Charity Commission
- Chronicle of Philanthropy
