In system memory editor of Altera for Xilinx

Hi!,

I have been working with Altera FPGAs for a long time and now I have to
deal with Xilinx ones. Until now, with Quartus II I have been able to
manage the content of different registers and memories with 'In system
memory editor' and I would like to do the same with Xilinx. I cannot find
the right application to do it. Could you tell me which one I need or how I
can do it?

Thanx