You might have a look here http://deesoft.ru/lang/en which includes several MCDA methods (American and European ones) . I briefly described this platform in my book - Google might give you preview: http://books.google.com.hk/books?id=mvDZoW7F4wwC&pg=PA279&lpg=PA279&dq=decerns+platform+software+mcda&source=bl&ots=PjtqdzSeX9&sig=wxVDPsf5KCNSFrkz5dlwuv-A0kg&hl=zh-CN&sa=X&ei=IGs7U5SBCOTB0QHK0YCADA&ved=0CEIQ6AEwAw#v=onepage&q=decerns%20platform%20software%20mcda&f=false
Don't hesitate to contact me if you have any question.