Google Person Finder for loved ones affected by a natural disaster

Google Person Finder is an open source web application that provides a registry and message board for survivors, family, and loved ones affected by a natural disaster to post and search for information about each other's status and whereabouts. It was created by volunteer Google engineers in response to the 2010 Haiti earthquake.

Google Person Finder is written in Python and hosted on Google App Engine. Its database and API are based on the People Finder Interchange Format (PFIF) developed in 2005 for the Katrina PeopleFinder Project.

Source:  http://en.wikipedia.org/wiki/Google_Person_Finder