The research project aims at understanding alternative food organizations' engagement for a more ecological, just and healthier food system. To do so, we developed a broad definition of alternative food organizations in order to capture the diversity of actors, actions and goals. We defined alternative food organizations as organizations that contest, counter, or reduce one or several of the mainstream food system's negative externalities (inequalities, ecological or health issues) or question the overall mainstream food system. Thanks to a mapping of all alternative food organizations in Geneva and a representative survey, we studied their goals and their concrete actions in favor of changing the current food system. Furthermore, a frame analysis of their websites allowed understanding how alternative food organizations talk about the problems of the food system as well as what solutions they propose.