I can&#x27;t tell from this particular screenshot, but things I&#x27;ve seen in other QT apps: widgets don&#x27;t conform to all OS X standard behaviors (e.g. accepting keyboard shortcuts, scrolling behavior like &quot;rubber band scrolling&quot; etc), custom (Qt drawn) widgets with differing look from platform ones throwing you off, lack of support for new features as they are introduced, like OS X native full screen, etc. I&#x27;d say keyboard shortcuts and native widget behavior is the #1 thing though, followed by looks.<p>&gt;<i>Of course there are alternative file managers for other platforms. But none of them make you really go wow.</i><p>Btw, there are a couple for Mac too, in case you haven&#x27;t seen them, e.g.: <a href="http:&#x2F;&#x2F;www.binarynights.com&#x2F;forklift&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.binarynights.com&#x2F;forklift&#x2F;</a> ,  <a href="http:&#x2F;&#x2F;mac.eltima.com&#x2F;file-manager.html" rel="nofollow">http:&#x2F;&#x2F;mac.eltima.com&#x2F;file-manager.html</a> and <a href="http:&#x2F;&#x2F;www.cocoatech.com&#x2F;pathfinder&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.cocoatech.com&#x2F;pathfinder&#x2F;</a>.