ICTs and social n etworks can contribute to the emergence o f creating competent teams for emergency response. For example, d uring disasters such as Pakistan flood of 2010, Japan tsunami of 2011 and Thailand flood of 2011, On -Line S ocial Networks (OSNs) have served as a main technology for numerous people seeking to share information about their personal status, to request resources, or to report the status of their community. They can be used at least for three main functions: detec ting emergencies, disseminating information, and managing emergencies. On the other hand, the combination of Internet and mobile technology generated smart devices with associated sensor technologies that are becoming crucial parts in delivering supports d uring disaster and emergency situation. However, such use of mobile devices usually requires a reliable support system from crowdsensing technologies and back-end intelligent systems. In this way, t he mobile c rowdsensing must be designed with focus on mechanisms to identify and localize survivors and first responders in an incident zone, as well as mechanisms for competence characterization provided by social n etworks to facilitate coordination for individuals as well as crowds. These main technologies, the crowdsensing and social networks combined with semantic web and ontologies can provide a complete emergency response system that is the purpose of the CO-SEMIWA platform. This platform permits an interaction among participan ts to create dynamically competent teams where all participants perform tasks and solve problems in a specific emergency context and situation.