There are bits of Mac OS X in Windows. But there are also bits of Windows in Mac OS X. I went back over ten years to find the origin of some common features that are now in both operating systems and found some surprises. Some stolen ideas are blatant copies of the features of the other side. Some are merely concepts, implemented in a completely different way.
I created these two slideshows for the folks at Infoworld, who have graciously allowed me to reprint them here at MacWindows.