Clean Up Disk Space Easily with TreeSize

You open the Windows Explorer to check on your hard drives and all you see is red? There was room on your hard disk yesterday, but today it is gone? There is help! The disk space manager TreeSize Free tells you where precious disk space has gone. - Visual

WinDirStat is a program that allows you to find drive space hogs at a glance. It achieves that by displaying a drive, drives or directories in a treemap that assigns bigger areas to bigger files and directories.

DiskUsage是在GitHub上的免費、開源工具，能在Windows、MacOS、Linux上使用。 DiskUsage能以更快速、更美觀的方式來呈現資料夾與檔案的大小。

WinDirStat is a disk usage statistics viewer and cleanup assistant for Microsoft Windows clients and servers. On start up, it reads the whole directory tree once and then presents it in three useful views:

WinDirStat is a free and open-source disk usage analysis software tool for Windows that helps you visualise and understand how your disk space is being utilised.

WizTree is the fastest disk space analyzer available for Windows. It reads the Master File Table (MFT) directly from the disk, bypassing Windows and gaining a huge performance boost.