This paper aims at presenting the framework of a decision support system for the development of competencies in organizations through cooperation between Small and Medium Enterprises. Based on both qualitative and quantitative models linked to the concept of competence, this decision support system uses Analytic Hierarchical Process to arrange different collaborative action plans for the development of competencies. We propose to evaluate the development scenarios with five indicators based on a principle of equity applied to the competence increases of each partner within a network and to the costs and risks sharing. Finally, we apply this study to an industrial case.