WhatSize 6.4.3 (Mac OS X)
Displays a look at the size of your files and folders
With whatsize, Blink of an Eye, you can see what is the size of each one of your folders and files on your Mac, just Browse them as if it were the Finder. While it is true that the Finder does not show the size, for all or for folders, or you have to select them to know.
Whatsize is more comfortable because next to each folder and file size: puts us in the most consistent red, Mauve in the medium size, and finally, in the most Light and Green Light.
From the side of whatsize, it is possible to add new directories whose size you want to monitor. On the other whatsize Area, select a file you can send it to the trash from the context menu or see your entire route and display it in the Finder. Finally, whatsize has several views, Finder, and filters of different sizes.
OS X 10.7 or Later