Foundationcenter.org offers a list of the top 100 charities in the United States, ranked by total giving. Lovetoknow.com provides a list of 100 large top-rated charities.
As of the end of the 2013 fiscal year, The Bill & Melinda Gates Foundation was the largest charity in the United States with a total giving of over $3 billion. The second-largest was the Bristol-Meyer Squib Patient Assistance Foundation with over $800 million. According to Lovetoknow.com, Action Against Hunger and the American Heart Association are the top two American charities. Action Against Hunger provides long-term solutions to hunger around the world. The American Heart Association educates the public about heart disease, including CPR training and prevention information.