Yes! The Quad File Explorer Q-Dir supports the display of folder size for Win-8, 8.1, 7, XP, and other windows server os (2008,2012,...)
in the Status-Bar can you show the folder size (... see Image-1 Arrow-1)!
And at Q-Dir 3.83 you can use the file and folder size in a Column with percentage and customizable display and other features. For more info ... click here.
If you only need the Folder-Size use my famous tool MeinPlatz 1.62 or FolderSize the shell extension but only for XP
See also: ... Leave the folder size display in a column, does it?
FAQ 33: Updated on: April 19th 2018 23:57