Our Clients C3 works with 200+ nonprofit organizations — here are just a few. Alzheimers Association Ford Foundation Silicon Valley Community Foundation change.org The Robert Wood Johnson Foundation HHMI Medical Institute Conrad N. Hilton Foundation The William and Flora Hewlett Foundation Nelson Atkins National Urban League YMCA Greater Houston United Way Greater Atlanta Goodwill Industries of Michiana, Inc Case Western Reserve University International Rescue Commitee Allen Institute Groton Noble and Greenough School Connecticut Public The James Irvine Foundation WKKF New York Community Trust Altius New York Genome Center The Earth Genome Economic Security Project TIDES YWCA Greenwich California Lutheran University BRYN MAWR College Harry and Jeanette Weinberg Foundation Simons Foundation Dogwood Health Trust Goodwill Industries South Piedmont Trinity University OU University of Oklahoma Lieber institute for Brain Development Knight Foundation California Wellness Foundation Knight Foundation Flatiron Institute University Federal Credit Union Houston Foundation Compassion Princeton Area Community Foundation Bush Foundation Wisconsin Alumni Research Foundation Movement Strategy Center Choice. Respect. Independence. Center for Organ Recovery & Education Connecticut Science Center TERRA Learn More