Alternatives to SpaceObServer for all platforms with any license

WinDirStat

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

Free Open Source Windows
Disk usage statistics Tree view Ad-free Customizable ... Display files size Hierarchical structure Multiple languages Portable Add a feature

935 Like
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...
- Discontinued
  The website is outdated and it stopped updating in 2018 or 2016. Also the page isn't compatible to Windows 10 OS official. https://www.fosshub.com/SpaceSniffer.html
Free Windows
Filtering OS context menu Spatial visualization Tree map ... Visual navigation Hierarchical heatmaps Mapping Portable Real time display Visual Tagging Add a feature

306 Like
WizTree

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

Free Windows
File management Tree map Display files size Fast file and folder search ... Graphical interface Facebook Login Folder Size HDD Visualization Support for Large File One Time Passwords Portable Add a feature

109 Like
TreeSize Professional

TreeSize Professional 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...

Freemium $ $ $ Windows PortableApps.com
Display files size Tree view Portable System Cleanup Add a feature

249 Like
Baobab Disk Usage Analyzer

Baobab Disk Usage Analyzer is a graphical application to analyse disk usage in any Gnome environment.

Free Open Source Linux BSD FreeBSD GNOME Homebrew
Does not show ZFS filesystems Sunburst chart Add a feature

182 Like
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
Sunburst chart Usability Add a feature

99 Like
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
Folder Hierarchy Folder Size Add a feature

58 Like
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 Personal $ $ $ Open Source Mac
2D graphical representation of folders Lightweight Add a feature

74 Like
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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
Sync with Amazon Drive Version and Source control Ad-free Categories ... Portable Add a feature

91 Like
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
Folders Reporting Add a feature

18 Like