- Accenture
- Alcoa Foundation
- Amazon
- American Express
- Apple
- Associated Press
- Barclays Capital
- BlackRock
- Bloomberg
- CDW
- charity: water
- Chevron
- Cisco
- Citigroup
- Clinton Global Initiative
- CNNMoney
- Columbia University
- Craigslist
- Credit Suisse
- Digital Wish
- Dikembe Mutumbo Foundation
- DonorsChoose.org
- DoSomething.org
- eBay
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- Educate Girls Globally
- Ernst & Young
- F5 Networks
- Facebook
- Fonderie 47
- Ford Foundation
- Fund for the City of New York
- Gap
- GE Capital
- Giving Back Fund
- Global Health Corps
- Goldman Sachs
- Goods for Good
- Google
- Hewlett-Packard
- Huffington Post Media Group
- IBM
- Indiegogo
- Intel Corporation
- JPMorgan Chase
- Kaiser Permanente
- LeFrak Productions
- LinkedIn
- Living Social
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- Macy's
- Mashable
- MasterCard Worldwide
- McKesson
- Memorial Sloan-Kettering
- Morgan Stanley
- NASA
- National Football League
- Northwestern University
- NYC Department of Education
- One Laptop Per Child
- Oracle
- Paypal
- Peace Corps
- PwC
- Robin Hood
- Room to Read
- Salesforce.com Foundation
- Samsung
- Scientists Without Borders
- Skype
- Stanford University
- Starbucks
- Microsoft
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- Taproot Foundation
- TechCrunch
- The Economist
- The Giving Back Fund
- The World Bank Institute
- T-Venture of America
- Twitter
- U.S. Fund for UNICEF
- U.S. State Department
- UN Development Programme
- United Nations
- USAID
- Visa
- VMware
- Vodafone
- Waggener Edstrom
- Wal Mart
- Wall Street Journal
- White House
- William J. Clinton Foundation
- World Bank
- Year Up
- Yéle Haiti Foundation
- Zynga
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