Ushahidi ("testimony'' in Swahili") is a platform that users crowdsourcing to gather information during a time of crisis. Anybody can submit information during a crisis via mobile phone, email or the website which will then be mapped and a timeline provided.
It was initially started to map reports about the violence in Kenya after the election in 2008. The platform which is open source is being built and will cater for plug-ins and extensions so that it can be customised for different needs...