Great tool. Only glitch is that the OK (check mark) and Cancel (X-mark) are not visible to me on the configure screens. I have to hover the mouse until it figures out where the (invisible) buttons are. Might be because I’m using the software remotely (through TeamViewer). No biggie. Everything else great. I used it in conjuction with PhotoSweep which has a more sophisticated way of finding duplicates and near duplicates. 1/16/15 - Update. Well I must join another reviewer and add “Ridiculously Good Service” to the title. I just got a post from a Silent Sifter who had read my review and who invited me to see whether the issue with the invisible buttons (above) had been corrected. Of course, it has been, because they just fixed it. Sweet! Silent Sifter is a wonderful app, with a great service team. I can only recommend it to others.