In this paper we describe diviz, a software for modeling, processing and sharing Multiple Criteria Decision Aid (mcda) techniques and experi-ments. One of its main features is the possibility to design complex mcda algorithms by combining elementary calculation components via an intu-itive graphical user interface. The target user community of diviz reaches from researchers to teachers, students and mcda practitioners. The di-viz software also eases the comparison of results produced by different algorithms on the same decision problem instance and facilitates the dis-semination of mcda methods and experiments