As far as I know, there are only two options for Airbus system logic and displays software Project Magenta and AirSimTech (AST). Software contains several module programs that will simulate systems and all displays. This way you can simulate primary flight displays (PFD), navigation displays (ND), electronic warning display (EWD) with system display (SD), MCDUs, … and everything else needed. Software will connect to flight simulator via FSUIPC and distribute data to module programs on different PCs across the network.
As you can guess, I decided to for Aircraft Simulation Technology also known as AirSimTech or AST. They had a reduced price offer for A320 Experience Advanced and I went for it. So far I like it, Airbus magic is finally happening.