- Grants.gov
- National Endowment for the Arts
- National Endowment for the Humanities
- National Institutes of Health
- U.S. Department of Health & Human Services Agency for Healthcare Research and Quality
- U.S. Department of Health & Human Services Health Resources and Services Administration
- National Science Foundation
- U.S. Department of Education
- Pennsylvania State Agencies
- Pennsylvania Department of Community and Economic Development
- Pennsylvania Department of Education
- State Agencies
- Foundation Center
- GuideStar
- Council on Foundations
- Grantsmanship Center
- Center for Effective Philanthropy
- National Committee for Responsive Philanthropy
- Philanthropy in the News
- Fundsnet Services
- Grantmakers for Education
- Grantmakers in Health
- National Information Center on Health Services Research and Health Care Technology
- The Commonwealth Fund