Hi, I was hoping if anyone knows of a software that can achieve this, hopefully what seems is a relatively simple task. What I am after is a program, either freeware or retail, that can if I select two folders can compare the full contents of each of the two folders and identify if one folder has any extra files that the other doesn't. Or if there are files named the same between the two but of different sizes. My reasons are due to my repeatedly backing up my most needed folders, due to my having a fiasco back in March where my motherboard decided to corrupt all my internal SATA Hard Drives, so I have been repeatedly copying folders to numerous external drives and partitions. But I have got somewhat lost as to which contains what over the months. They all should be the same folders, however there are times when I believe I have updated one backup folder and not others, then done the same with others and I am very lost as to which contains all my files. So I need a easy way to sort out which has what. Big thanks for any suggestions.