Well known Christian non-profit organizations include World Vision, Salvation Army, Compassion International and Samaritan's Purse. All four of these organizations operate on an international level and give humanitarian assistance to provide relief for poverty, health, war, famine, drought and natural disasters.
World Vision is a unique program that prompts Christians and non-Christians alike to donate monthly to sponsor a child in a third-world country. The donation typically goes towards the child's education but is also sometimes used to provide food and clothing.
Salvation Army operates by going door-to-door and requesting donations then transporting those donations to crisis areas. Additionally, Salvation Army runs thrift shops from which the proceeds are given to relief efforts.
Compassion International is similar to World Vision in that it is primarily a child-sponsorship organization. Samaritan's Purse is a diverse group that provides an array of medical, emergency and general relief work.