Here are some links to agencies that work to alleviate hunger, poverty, and to relieve disaster victims.
American Friends Service Comm.
AmeriCares
American Jewish World Service
American Red Cross
America’s Second Harvest
Catholic Charities
Catholic Relief Services
Church World Service
Humane Society of the United States
International Rescue Committee
Islamic Relief USA
Jewish Coalition for Disaster Relief
Mennonite Central Committee
Oxfam
Salvation Army
ShelterBox
InterAction - -American Council for Voluntary International Action - A coalition of over 170 non-profit organizations working worldwide&emdash;and the U.S.'s leading advocate for sustainable development, refugee and disaster assistance and humanitarian aid.
ReliefWeb
-- serving the information needs of the humanitarian relief community.