The OpenREGGUI plugin for MCsquare allows you to compute LET distribution maps.
                    
                    
                        Linear energy transfer (LET) distribution maps can be computed for Pencil Beam Scanning (PBS) with 
OpenREGGUI, thanks to MCsquare fast Monte Carlo dose engine, as briefly described in its 
features. It is accessible via the its user interface, available in OpenREGGUI.