WinDirStat (Windows Directory Statistics) was developed specifically for the Windows API to read NTFS file systems. Because macOS uses different file systems (APFS or HFS+) and a completely different software architecture, the original program cannot run natively on Apple hardware. Top Free Alternatives (The "Real" Mac WinDirStat)

Many users consider Disk Inventory X the closest visual "clone" of WinDirStat for macOS. It offers a three-pane view similar to the Windows original: a folder list, a file-type legend, and the treemap. YouTube·Stephen Fosketthttps://www.youtube.com Disk Inventory X demo

GrandPerspective is the closest spiritual successor to WinDirStat for Mac. It creates a colorful treemap where the size of each block corresponds to the file size. Completely free and open-source.

If you want the classic "blocks of color" treemap view that made WinDirStat famous, these two free, open-source tools are your best options: 1. GrandPerspective (Most Similar)

Available on SourceForge for free or the Mac App Store for a small fee to support development. 2. Disk Inventory X (The Classic Clone)

While itself is strictly a Windows application and does not have a direct "download" for macOS, several powerful alternatives offer the same visual treemap functionality to help you reclaim storage space. Why You Can't Download WinDirStat for Mac