Faced with increasing risks, risk management has gradually evolved by integrating new approaches, such as the concept of resilience. An innovative and relevant concept in the systemic approach to risks, resilience is nevertheless struggling to become operational. This term, which has become abstract, is not very appropriate for local actors and often remains at the level of political discourse. The challenge of current research in risk management is therefore to work on the operationalization of the concept by proposing decision support tools. This article presents different methodologies to overcome the abstraction of the concept. From indicators to modeling tools or collaborative approaches, these approaches aim to operationalize resilience concept. However, despite the contribution of these innovative methodologies, the excessive diversity of approaches adds complexity. This article therefore concludes on the interest of a resilience toolbox in the form of an observatory.