WinDirStat

WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.

Free Open Source Windows

SpaceSniffer

SpaceSniffer is a tool application that gives you an idea of how folders and files are structured on your disks. By using a Treemap visualization layout, you have...

Free Windows

TreeSize

TreeSize tells you where precious disk space has gone to. It can be started from the context menu of a local folder or a local drive and displays the size of each...

Freemium $ $ $ Windows PortableApps.com

Baobab

Baobab Disk Usage Analyzer is a graphical, menu-driven application to analyse disk usage on Linux. Disk Usage Analyzer can easily scan either the whole filesystem tree...

Free Open Source Mac Linux BSD FreeBSD GNOME ... Homebrew

WizTree

Identify the data vacuums on your hard drive with pinpoint precision very, very quickly.

Free Windows

DaisyDisk

With DaisyDisk you can free up disk space by quickly finding and deleting big, useless files. The program scans any mounted disk and displays it on the sunburst map...

Commercial Mac

DiskUsage

DiskUsage provides a way to find out which files and directories on the SD card of your Android phone are consuming the most space. It displays diagram with...

Free Open Source Android Android Tablet

JDiskReport

JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders. The tool...

Free Mac Windows Linux BSD

ncdu

A disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you don't have an entire gaphical setup, but have to do with a simple SSH...

Free Open Source Mac Linux BSD

GrandPerspective

GrandPerspective is a small utility application for Mac that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can...

Free Open Source Mac

QDirStat

QDirStat is a graphical disk usage utility. The successor of KDirStat without any KDE dependencies.

Free Open Source Mac Linux BSD

Scanner

This tool uses a sunburst chart to display the usage of your hard disk or other media. The chart shows all major files and folders from all directory levels at once.

• Discontinued The program seems to be no longer updated. Last version, 2.13, released in July 2012, is fully working and can be still downloaded from the official website.

Free Windows

FolderSizes

FolderSizes provides an engaging, interactive disk space analysis experience that you must try yourself to truly appreciate. More than just a series of diverse reports...

Commercial Windows

SpaceMonger

SpaceMonger is a treemapping tool for hard disks and file systems. Scan, map and manage PC, network and cloud storage Copy, move and delete files to free...

Commercial $ $ $ Windows

Xinorbis

Xinorbis is a completely FREE, powerful Windows-based data storage analyser for single users or network administrators. Provides an instant visual display of the...

Free Windows