Sahana is an open source disaster management system that was created in response to the 2004 Asian tsunami. It consists of several modules that help coordinate relief efforts during disasters, including registries to track organizations, shelters, missing persons, and volunteers. It also includes request management, hospital management, and disaster victim identification functions. Sahana has been deployed during numerous disasters worldwide since 2005 and works with partners and a global community of volunteers to continuously improve its tools.