Timely access to critical information is crucial for any organization operating in situations of emergency. Deploying an adequate information system tailored to specific organizational needs and matched to the organizational structure is essential. To understand the knowledge management needs of Medecins Sans Frontieres, one of the leading NGOs in the humanitarian and medical fields, we conducted in total 145 hours of in-depth interviews. This paper presents three identified key requirements for an effective knowledge management system specifically designed for large distributed NGOs, like MSF. Additionally, we introduce a novel social media called Graspeo designed and built from ground up to fulfill these requirements.