Best WhatSize Alternatives in 2026
Updated
20 apps from disk space analyzers ranked against WhatSize on the same published basis.
- 1WhatSize vs WizTree
- 2WhatSize vs TreeSize
- 3WhatSize vs FolderSizes
- 4WhatSize vs SizeTrend
- 5WhatSize vs Disk Usage Analyzer
- 6WhatSize vs Disk Analyzer Pro
- 7WhatSize vs eDirStat
- 8WhatSize vs StorageRadar
- 9WhatSize vs Drive Atlas
- 10WhatSize vs Disk Auditor
- 11WhatSize vs LumaDisk
- 12WhatSize vs Filelight
- 13WhatSize vs SpaceMonger
- 14WhatSize vs DiskAtlas
- 15WhatSize vs Space Wizard
- 16WhatSize vs WinDirStat
- 17WhatSize vs Folder Size
- 18WhatSize vs gdu
- 19WhatSize vs OverClean
- 20WhatSize vs SpaceObServer
WhatSize alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | WizTree | 9.2 | Free plan | $25/mo | Mac, Windows |
| 2 | TreeSize | 9.0 | Free plan | Free | Windows |
| 3 | FolderSizes | 8.8 | Free plan | Free | Windows |
| 4 | SizeTrend | 8.7 | Free plan | Free | Windows |
| 5 | Disk Usage Analyzer | 8.6 | Free plan | Free | Linux |
| 6 | Disk Analyzer Pro | 8.5 | Free plan | Free | Mac, Windows |
| 7 | eDirStat | 8.4 | No | Linux, Mac, Web, Windows | |
| 8 | StorageRadar | 8.4 | Free plan | $9.99/mo | Mac |
| 9 | Drive Atlas | 8.4 | Free plan | $20/mo | Linux, Windows |
| 10 | Disk Auditor | 8.2 | Free plan | Free | Windows |
| 11 | LumaDisk | 8.2 | Free plan | $6.89/mo | Mac, Windows |
| 12 | Filelight | 8.1 | Linux, Windows | ||
| 13 | SpaceMonger | 8.1 | Windows | ||
| 14 | DiskAtlas | 8.1 | Free plan | $5/mo | Mac |
| 15 | Space Wizard | 8.1 | Free plan | Free | Linux, Mac, Windows |
| 16 | WinDirStat | 8.0 | Windows | ||
| 17 | Folder Size | 8.0 | Free plan | $24.95/mo | Windows |
| 18 | gdu | 8.0 | Free plan | Free | Linux, Mac, Web, Windows |
| 19 | OverClean | 7.9 | Free plan | $9.99/mo | Mac |
| 20 | SpaceObServer | 7.8 | Windows |
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Questions about WhatSize alternatives
What is the best alternative to WhatSize?
WizTree, number 1 in disk space analyzers with a score of 9.2 out of 10. The others here: TreeSize, FolderSizes, SizeTrend and 16 more.
What is the best free alternative to WhatSize?
WizTree is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.