I have a compiled (binary) bitstream file which I just want to emulate in software.
Linux, Mac, Windows.. anything goes. I know it will probably take a long time but I don't really care how long it takes. Anyway, I do NOT want to load the code to a real FPGA and run it.
Is there a software that can be used to achieve that goal?
You can't.
FPGA simulators only work on HDL code. Once a design has been built into a bitstream, that file can only be used to program an FPGA.