- Ontario Nonprofit Network
- Organizational Research Services (ORS)
- ORS Impact
- Otto Bremer Foundation
- Philanthropic Initiative
- Policy Studies Associates, Inc.
- Poverty Out of Progress
- Project Streamline
- Public Profit
- Resource Alliance
- Rhode Island Foundation
- Robert Wood Johnson Foundation
- Robin Hood Foundation
- Rockefeller Brothers Fund
- Rockefeller Foundation
- Salesforce.org
- San Francisco Department on the Status of Women
- Skoll
- Social Impact Exchange at Growth Philanthropy Network
- Social Venture Technology Group
