dProperties is released with different commercial and academic licenses:
Single License: dProperties can be run only on the central processing unit originally designated for installation.
Site License: dProperties may be run or accessed by any computer at the specific location to which dProperties is delivered, but may not be accessed from remote sites.
Talete srl issues academic license for non-commercial use only. Academic license is intended only for Universities. Academic license is intended only for any research from which any resulting intellectual property remains in the public domain.
Read the dProperties license agreement for further details.
Prices of all the dProperties licenses are listed in the dProperties web page: http://www.talete.mi.it/products/dproperties_description.htm