I have also been searching for a software with graphical user interface for the same purpose. I asked a quite similar question here. Someone suggested me to use Matlab.
Recently, I have come across a software for implementing the fuzzy AHP, fuzzy ANP, fuzzy TOPSIS and so on. However, I havent used that software yet. Therefore, I cant gurantee if that can fulfill your requirement.
Here is the link of the software-http://decisionera.com/ProductInfo.aspx?id=9
Hope you can find something interesting out of the software.
Are there any source of downloading free AHP software? - ResearchGate. Available from: https://www.researchgate.net/post/Are_there_any_source_of_downloading_free_AHP_software [accessed Jan 21, 2016].