|Headquarters||United Kingdom, South Africa, United States|
Founded in 2004, Keystone Accountability is a not-for-profit organization with locations in United Kingdom, South Africa, United States. Keystone's mission strives to improve the effectiveness of social purpose organizations. Using benchmarking surveys, feedback and analysis, Keystone consults on NGOs, international development agencies, and major foundations to plan, measure and report social change. In 2009, Keystone blended participatory evaluation and customer satisfaction to create a new methodology referred to as Constituent Voice.
- Global Knowledge Partnership Evaluation (2007) 
- The Rural Enterprise Development Initiative. (2007) 
- East African Grantee Survey (2008) 
- Grantmaker Performance Survey (2008) 
- Networks Survey (2009) 
- International NGO Survey (2010–2011) 
- Social Investment Performance (2010) 
- Southern Africa Grantee Survey (2010–2011) 
- Jacobs, Alex, Chris Barnett, and Richard Ponsford. "Three Approaches to Monitoring: Feedback Systems, Participatory Monitoring and Evaluation and Logical Frameworks." IDS Bulletin 41.6 (2010): 36-44. Print.
- Ebrahim, Alnoor. "The Many Faces of Nonprofit Accountability." Harvard BS Working Paper (2010): 10. Print.
- Bonbright, David, and Jamey Power. "Private Sector Metrics Contribution to Social Change: Customer Satisfaction Meets Agriculture Development." IDS Bulletin 41.6 (2010): 65-72. Print.
- Ebrahim, Alnoor, and V. Kasturi Rangan. "The Limits of Non Profit Impact: A Contingency Framework for Measuring Social Performance." Harvard Business School Working Paper (2010). Print.
- David Bonbright. Keystone Strategy 2011-2013. 2010. Social Investment Survey 2010
- Global Knowledge Partnership Evaluation 2007
- Rural Enterprise Development Initiative. 2007. REDI.org.za
- Network Survey. 2009. Keystoneaccountability.org
- International Nongovernment Organization Survey. 2010. Keystoneaccountability.org
- CAF Venturesome Keystone Response. 2010. Social Investment Survey 2010