Best Disk Space Analyzers in 2026
Updated
In short: TreeSize is ranked #1 of 84 as of 4 October 2026, ahead of FolderSizes and WizTree. The best-ranked option with a free plan is FolderSizes. The lowest first paid tier on this page is DiskTree at $1.25/mo.
Finding what uses drive space starts with understanding which areas a tool can inspect and how it presents the results. Compare TreeSize, WizTree and FolderSizes on scan scope, application sizes, external drive scans and file-type breakdowns. Treemap views can offer another way to review storage, while exportable reports may matter if you want to save findings. Desktop platforms, free-plan availability and paid-from pricing add further comparison points. Consider which drives and views are relevant to you, then weigh the listed capabilities against the way you prefer to examine storage.
84 disk space analyzers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 TreeSize No phone app RecognisedPhone appDocumentedFree plan 8.2Free Desktop platforms: WindowsTreemap view: YesApplication sizes: Yes
- 2 FolderSizes No phone app RecognisedPhone appDocumentedFree plan 8.2Free Desktop platforms: WindowsTreemap view: Yes
- 3 WizTree No phone app RecognisedPhone appDocumentedFree plan 8.2$25/mo Desktop platforms: Windows, macOSTreemap view: YesApplication sizes: No
- 4 StorageRadar No phone app RecognisedPhone appDocumentedFree plan 7.8$9.99/mo Desktop platforms: macosTreemap view: YesApplication sizes: Yes
- 5 SizeTrend No phone app RecognisedPhone appDocumentedFree plan 7.8Free Desktop platforms: windowsApplication sizes: Yes
- 6 Folder Size No phone app RecognisedPhone appDocumentedFree plan 7.7$24.95/mo Desktop platforms: windows
- 7 Disk Auditor No phone app RecognisedPhone appDocumentedFree plan 7.6Free Desktop platforms: WindowsTreemap view: Yes
- 8 DiskAtlas No phone app RecognisedPhone appDocumentedFree plan 7.6$5/mo Desktop platforms: macosTreemap view: YesApplication sizes: Yes
- 9 LumaDisk No phone app RecognisedPhone appDocumentedFree plan 7.6$6.89/mo Desktop platforms: macOS, WindowsTreemap view: Yes
- 10 Space Wizard No phone app RecognisedPhone appDocumentedFree plan 7.4Free Desktop platforms: Windows, macOS, LinuxTreemap view: NoApplication sizes: No
- 11 winTrim No phone app RecognisedPhone appDocumentedFree plan 7.3Free Desktop platforms: windows, macos, linuxTreemap view: YesApplication sizes: Yes
- 12 QDirStat No phone app RecognisedPhone appDocumentedFree plan 7.2 Desktop platforms: Linux, BSD, Unix-like systems; macOSTreemap view: YesApplication sizes: Yes
- 13 gdu No phone app RecognisedPhone appDocumentedFree plan 7.2 Desktop platforms: Linux, macOS, WindowsTreemap view: YesApplication sizes: No
- 14 DiskMapper No phone app RecognisedPhone appDocumentedFree plan 7.2Free Desktop platforms: macosTreemap view: YesApplication sizes: Yes
- 15 SpaceObServer No phone app RecognisedPhone appDocumentedFree plan 7.1 Desktop platforms: windowsTreemap view: Yes
- 16 DiskSavvy No phone app RecognisedPhone appDocumentedFree plan 7.1 Desktop platforms: WindowsTreemap view: No
- 17 Capacitra No phone app RecognisedPhone appDocumentedFree plan 7.1 Desktop platforms: windowsTreemap view: Yes
- 18 Flare Scan No phone app RecognisedPhone appDocumentedFree plan 7.0 Desktop platforms: macosTreemap view: Yes
- 19 eDirStat No phone app RecognisedPhone appDocumentedFree plan 7.0 Desktop platforms: windows, macos, linuxTreemap view: Yes
- 20 DiskTree No phone app RecognisedPhone appDocumentedFree plan 7.0$1.25/mo Desktop platforms: macosTreemap view: Yes
- 21 Spacie No phone app RecognisedPhone appDocumentedFree plan 6.9 Desktop platforms: macosTreemap view: Yes
- 22 Storage Analyser Android only RecognisedPhone appDocumentedFree plan 6.9 Desktop platforms: androidTreemap view: NoApplication sizes: Yes
- 23 DaisyDisk No phone app RecognisedPhone appDocumentedFree plan 6.8$9.99/mo Desktop platforms: macosTreemap view: Yes
- 24 DiskMap No phone app RecognisedPhone appDocumentedFree plan 6.8 Desktop platforms: windowsTreemap view: YesApplication sizes: No
- 25 FreeSize No phone app RecognisedPhone appDocumentedFree plan 6.8CHF 2.42/mo Desktop platforms: windows, macos, linuxTreemap view: Yes
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which disk space analyzer is ranked first on Samsung Mobile US Press?
TreeSize is ranked #1 of 84 with a score of 8.2. FolderSizes is second and WizTree third.
How many of these have a free plan?
14 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, DiskTree has the lowest first paid tier we found: $1.25/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.