The CPN group at the University of Aarhus, Denmark, has developed two sets of computer tools, supporting the use of CP-nets:
Design/CPN was developed in the late 80'ies and early 90'ies. It has been used by 800 different organisations in 60 different countries.
CPN Tools was developed from 2000 to 2010 at which time it had more than 10,000 licenses in nearly 150 countries. From the autumn of 2010 CPN Tools is transferred to the AIS group, Eindhoven University of Technology, The Netherlands.