GreatNonprofits is a leading technology social enterprise whose mission is to improve nonprofit excellence. We enable donors, volunteers, and clients to provide community feedback in the form of ratings and reviews for 1.8 million nonprofits, free of charge. Nonprofits can be reviewed on our website online at www.greatnonprofits.org or on a number of other sites whose functionality we power, including GuideStar, CharityNavigator, GlobalGiving, Pittsburgh Gives and JustGive.com. We have collected over 150,000 nonprofit stories for over 16,000 organizations.GreatNonprofits has been written up in the Economist, Wall Street Journal, Los Angeles Times and Chronicle of Philanthropy and personally endorsed by philanthropist Bill Gates. The organization is led by a cross-sector team of nonprofit, business, product, and technology professionals.