Habitat for Humanity is another one, but I couldn't find anything about their presence in Haiti.
MsF, by the way, lost 3 of their doctors to the disaster.
As for individuals, you are not speaking for the personnel from various countries who are helping in the relief works, are you? I mean, those from the UN, the Russians, French, British, Chinese, etc.
A group of Chinese personnel greet the rescue and relief goods from China at the airport in Port-au-Prince, Haiti, on Jan. 17, 2010. The goods weigh about 90 tons, and are worth about 13 million Chinese yuan(about 1.9 million U.S. dollars), including drugs, tents, portable lamps, water purifying equipments, food and water, and clothing.