Open Source

WinDirStat is a disk usage statistics viewer and cleanup tool for Windows based systems.

Freemium

TreeSize Free is a free disk space manager for Windows. The software shows you the sizes of folders including all subfolders.

JDiskReport

Free

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.

GrandPerspective

Open Source

GrandPerspective is open source software for Mac OS X used for disk space analysis.

Scanner

Free

Scanner is a tool uses a sunburst chart to display the usage of your hard disk or other media.

DiskUsage

Open Source

DiskUsage provides a way to find files and directories on storage card which consumes a lot of space.

SequoiaView

Free

SequoiaView is a disk browsing tool based on the principle of treemaps.

Filelight

Open Source

Filelight is a KDE graphical disk usage analyzer, part of the KDE Utils package.

FolderSizes

Commercial

FolderSizes is a disk space management tool.

SpaceSniffer

Free

SpaceSniffer is a freeWare and portable tool application that lets you understand how folders and files are structured on disks.

Baobab

Open Source

Baobab is a disk usage analyzer is a graphical disk usage analyzer for GNOME.

DaisyDisk

Commercial

DaisyDisk is a disk space analyzer for OS X.

ncdu

Open Source

ncdu (NCurses Disk Usage) is a disk utility for Unix systems.

WizTree

Free

WizTree gives you more control over how you see your files, in addition to letting you learn more about them from one look.

MindGems Folder Size

Free

Folder Size is a freeware disk size analysis tool that will display the directory sizes and folder tree sizes.

GD Map

Open Source

GdMap is a tool which allows visualizing disk space.

RidNacs

Free

RidNacs is a free and very fast disk space usage analyzer for Windows.

Xinorbis

Free

Xinorbis is a powerful hard disk, folder and storage analyzer.

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WinDirStat vs SpaceMonger

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SpaceSniffer vs SpaceMonger

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TreeSize vs SpaceMonger

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Baobab vs SpaceMonger

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JDiskReport vs SpaceMonger

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DaisyDisk vs SpaceMonger

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GrandPerspective vs SpaceMonger

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ncdu vs SpaceMonger

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Scanner vs SpaceMonger

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WizTree vs SpaceMonger

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DiskUsage vs SpaceMonger

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MindGems Folder Size vs SpaceMonger

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SequoiaView vs SpaceMonger

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GD Map vs SpaceMonger

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Filelight vs SpaceMonger

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RidNacs vs SpaceMonger

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FolderSizes vs SpaceMonger

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Xinorbis vs SpaceMonger

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SpaceMonger Alternatives

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