The diviz software is a tool for designing, executing and sharing Multiple Criteria Decision Aid (MCDA) techniques. The target user community of diviz reaches from researchers who wish to construct algorithmic workflows from elementary MCDA components, to teachers who need to present MCDA methods and let their students experiment them. Besides, one of the principal features of diviz is to ease the comparison of results issued from different methods on the same decision problem. This allows among others to check the robustness of the output of a decision aid process with respect to the choice of the decision aid technique.