Nina pointed me to Crisis Commons, an organization that brings together professionals to create useful tools in times of need. They have been conducting something called CrisisCamp where people get together on a specific day to work on projects.
In their words:
“Crisis Camp is a gathering of technologists who come together to build platforms to assist with the releif efforts in Haiti.”
“We are an international network of professionals drawn together by a call to service. We are developers, specialists, communicators, first responders, project managers, and people who just want to help!”
More here: http://crisiscommons.org/
Check on their site, top right corner, for upcoming CrisisCamp meet-ups in London, New York, Boston, Boulder/Devner, Los Angeles, Miami, Portland, Sillicon Valley and Washington DC.