Folder Size是一個讓檔案總管能夠顯示資料夾大小的外掛，安裝後在檔案總管的「大小」上按滑鼠右鍵，勾選「Folder Size」，就可以顯示資料夾大小了！（阿榮）
下載連結→ https://www.azofreeware.com/p/folder-size.html
官方網站：Folder Size
軟體性質：自由軟體（免費）
介面語言：英文
系統需求：Windows ※注意：此程式不支援 Vista！
關鍵字：FolderSize
Folder Size for Windows adds a new column to the Details view in Windows Explorer. The new column shows not only the size of files, but also the size of folders. It keeps track of which folders you view, and scans them in the background so you can see complete size of all files within the folder. It's very useful for cleaning up your disk. Once you get used to having that information available, a directory listing simply looks incomplete without it!