A few months ago I joined Engineers Without Borders Australia
Computing Assistance Support & Education (CASE)
Ken Taylor from CSIRO helps students from Udayana University, in Indonesia with ICT projects
Sahana is a Free and Open Source Disaster Management system run by a non-profit group based in Sri Lanka
Providing advice to others doing emergency and humanitiran systems can also be of assistance. Previously one of my ANU students, did a project on "Evaluating Emergency Management Websites"
More on disaster management specifically in my blog