| American Institute of Philanthropy |
| Association of Fundraising Professionals |
| BBB Wise Giving Alliance |
| BIG Online |
| Center for Effective Philanthropy |
| Center for Philanthropy and Nonprofit Leadership |
| Charities Aid Foundation |
| Charity Navigator |
| Council on Foundations |
| Exponent Philanthropy |
| Forum of Regional Associations of Grantmakers |
| Foundation Center |
| FoundationSearch America |
| Grant Managers Network |
| Grantcraft |
| Grantmakers for Effective Organizations |
| GuideStar |
| Idealist.org |
| Independent Sector |
| International Center for Non-Profit Law |
| National Center for Family Philanthropy |
| National Committee for Responsive Philanthropy |
| National Council of Nonprofits |
| The Philanthropy Roundtable |
