Catholic Relief Services made an initial $5 million commitment for emergency supplies and sent water purification tablets, plastic sheeting, hygiene kits and mosquito nets to Haiti from the Dominican Republic, according to its Web site.
For more resources on how to help, please visit Whitehouse.gov.
While Mercy Corps does not have a staff in Haiti, the organization does have "extensive experience responding to earthquakes," according to Mercy Corps contributor Randy Martin.
Those who wish to donate by phone can call (888) 256-1900.
Or donate by mail by sending a check to the follow address:
P.O. Box 2669
Portland, OR 97208-2669
Shortly following the quake's eruption, the U.S. division of UNICEF issued a statement on its blog calling attention to some of the smallest victims of the emergency.
"Children are always the most vulnerable population in any natural disaster, and UNICEF is there for them," the statement said.
UNICEF invited people to give by mail by printing out a form on its Web site, which you can find by clicking here.
Those interested in donating can also call (800) For Kids or (800) 367-5437.
Food for the Hungry has staff located near the earthquake and in neighboring Dominican Republic, according to the organization's Web site.
The site calls on visitors to donate to "help us respond now."
The Salvation Army mobilized resources and personnel to assist with the international relief effort in Haiti.
The group has been working in Haiti since 1950. At present, they operates schools, clinics, a hospital, feeding programs, children's homes and church-related activities in Port-au-Prince. They planned to send more than 44,000 pounds of pre-packaged emergency rations to the country, along with emergency disaster teams.
Doctors Without Borders had teams on the ground in Haiti when the earthquake struck who "witnessed significant damage to its medical facilities, injuries to patients and staff and an influx of wounded toward these hospitals in the capital," according to its Web site.
Partners in Health is an aid organization that has a team in Haiti and aims to provide "a preferential option for the poor in health care," according to its Web site.
Partners in Health has sent their medical director and a doctor to Santo Domingo.
In a press statement, the World Food Programme (WFP) said it will "bring urgently needed food assistance to thousands of people affected by the devastating earthquake" in Haiti.