Ali Eastburn is the founder of With This Ring, a Christian organization that asks people to give up their wedding rings to buy clean water for villages in underdeveloped nations.

David Dollahite is a professor of family life at Brigham Young University. He studies how religious beliefs and practices affect family relationships.

Melissa Brown is a part-time instructor at Indiana University’s School of Public and Environmental Affairs. Her research focuses on fundraising and charitable giving.

The national headquarters for the United Methodist Church in Barcelona, Spain.

The Hamdard Center for Health and Human Services in Addison, in suburban Chicago, is a shelter that caters mainly to Muslim women; it does not serve pork and has prayer rugs available.

The Cultural Cup Food Bank in Phoenix serves needy people who have religious or health dietary restrictions. It was founded by Zarinah Awad, a Muslim, but serves the wider community. Contact through the website.

Muslim Community Services of San Diego provides social and educational services in the area.

Islamic Relief USA is a California-based international Islamic nonprofit agency founded in 1984. It operates projects in education and training, water and sanitation, income generation, orphan support, health and nutrition, and emergency relief in foreign countries and in the U.S. It has a four-star rating from Charity Navigator.

Helping Hand USA is an Islamic global humanitarian relief and development organization that focuses on Pakistan, India, Bangladesh, Afghanistan, Kenya and Iraq. Its American office is in Detroit.