18.0
WizTree analyzes files and folders on Windows and macOS, presenting their sizes in a visual tree map.
Free planmacOSWindows
Best Disk Space Analyzers in 2026
WizTree leads this chart of 105 (8.0/10, free plan). LumaDisk is next (7.9/10, free plan), and Disk Usage Analyzer is the next highest-placed with a free plan (7.7/10). Disk space analyzers scan storage and show which files and folders use space; compare platform support and the views or reports you need. If you use a Xiaomi, Redmi or POCO phone or tablet, check for an Android app before choosing. Desktop and web availability varies by tool.
27.9
LumaDisk analyzes storage on Mac and Windows by mapping files and folders into interactive sunburst or treemap views.
Free planmacOSWindows
37.7
Disk Usage Analyzer helps Linux users see how much storage is occupied and how much remains.
Free planOpen sourceLinuxmacOS
- 4
FolderSizes
FolderSizes is a Windows tool for seeing how files and folders use space across local and network storage.
Free planWindows7.7$30 one-time - 5
SizeTrend
SizeTrend is a Windows tool for examining how files, folders and applications use disk space.
Free planWindows7.7$69.99 one-time - 6
dust
dust is a free Rust command-line tool for identifying where disk space is being used.
Free planOpen sourceLinuxmacOSWindows7.6Free plan - 7
Drive Atlas
Drive Atlas catalogs drives so users can search for files even when the drive containing them is unplugged.
Free planLinuxWindows7.4$20 one-time - 8
TreeSize
TreeSize analyzes files and folders to show how storage is used on Windows desktop systems.
Free planWindows7.3Free plan - 9
7.3Free plan - 10
DiskAtlas
DiskAtlas is a Mac disk space analyzer and system monitor with a zoomable treemap for exploring storage from the root volume into folders.
Free planmacOS7.3$5 one-time - 11
Avidemux
Free planOpen sourceWebLinuxmacOSWindows7.3Free plan - 12
Disk Analyzer Pro
Free planmacOSWindows7.2Free plan - 13
eDirStat
eDirStat is a free, open-source disk usage analyzer for Windows, macOS, and Linux.
WebLinuxmacOSWindows7.2$4.99 one-time - 14
Disk Auditor
Free planWindows7.2Free plan - 15
Folder Size
Folder Size analyzes Windows storage and helps locate large files and folders.
Free planWindows7.2$24.95 one-time - 167.2$9.99 one-time
- 17
rsdirstat
Free tool for Windows, macOS and Linux presents folder data as a treemap by file type.
Free planLinuxmacOSWindows7.2Free plan - 18
winTrim
Free planLinuxmacOSWindows7.2$4.99 one-time - 19
duvis
Free planWebLinuxmacOSWindows7.1Free plan - 20
gdu
Free planWebLinuxmacOSWindows7.1Free plan - 21
FreeSize
Free planLinuxmacOSWindows7.1From 29 CHF a year - 22
WinDirStat
WinDirStat is a free, open-source disk usage analyzer and cleanup assistant for Microsoft Windows.
Free planWindows7.0Free plan - 23
Filelight
Filelight is a free, open-source application for visualizing disk usage on Linux and Windows.
Free planLinuxWindows7.0Free plan - 24
QDirStat
QDirStat is a free graphical application for examining disk usage and cleaning up files.
Free planLinuxmacOSSelf-hosted7.0Free plan - 25
ccdu
ccdu is a free, Apache-2.0-licensed terminal disk-usage analyzer for Linux and macOS.
Free planLinuxmacOS7.0Free plan
Choosing well
Does it have an Android app?
Check Android availability if you want to scan storage from a Xiaomi, Redmi or POCO phone or tablet. Android is one of the platforms compared for this category; verify the individual tool’s support before choosing.
Which desktop or web platforms does it support?
Compare support for macOS, Windows and Linux, or check for web access if you want to work in a browser. Desktop and web support differs by tool.
What scan views and details do I need?
Compare treemap views, application sizes and file-type breakdowns. For example, WizTree and TreeSize are among the named options, but check the features you need for the specific tool.
Do I need external drive scans or exportable reports?
If you plan to scan external drives or share findings, check whether the tool supports external drive scans and exportable reports. Scan scope is another point of comparison.
Can I use it for free, and what does paid access cost?
Check whether a free plan covers your needs and compare any listed paid price or trial. Disk Usage Analyzer and Filelight are described as free; TreeSize has a free plan and a 14-day trial.
Questions people ask
Can I analyze disk space on an Android phone?
Android availability is compared for this category, but check the individual tool: an Android app is listed as a platform for one option.
Which disk space analyzers work on Linux?
Linux is one of the desktop platforms compared. Check the specific tool’s platform support before choosing.
What features should I compare in a disk space analyzer?
Compare treemap view, application sizes, file-type breakdown, external drive scans, exportable reports and scan scope.
Are there free disk space analyzer apps?
Free plans and pricing models vary. Disk Usage Analyzer, Filelight and WinDirStat are listed as free options.
Does TreeSize have a free trial?
TreeSize is listed with a free plan and a 14-day trial.