d5w writes "There are a thousand and one NGOs responding in some way to the disaster in Haiti, but the necessary infrastructure is usually overlooked when people give charity donations. In fact, some popular donation sites actively downgrade charities for spending on infrastructure. Here are two organizations responding in Haiti, though, that have a purely tech infrastructure focus: Télécoms Sans Frontières brings mobile telecom rigs and satellite phones to disaster sites, making sure that responders on the ground can communicate with each other and that individuals can contact families abroad; here's an eWeek story about TSF. MapAction sends experienced GIS people and GPS equipment to provide up-to-date mapping, which is important when the landscape has just changed drastically. Any others?"