Best WhatSize Alternatives in 2026
Updated
20 platforms from disk space analyzers ranked against WhatSize on the same published basis.
- 1WhatSize vs TreeSize
- 2WhatSize vs WizTree
- 3WhatSize vs LumaDisk
- 4WhatSize vs FolderSizes
- 5WhatSize vs SizeTrend
- 6WhatSize vs SpaceMonger
- 7WhatSize vs Disk Analyzer Pro
- 8WhatSize vs StorageRadar
- 9WhatSize vs DiskAtlas
- 10WhatSize vs Disk Auditor
- 11WhatSize vs Drive Atlas
- 12WhatSize vs Space Wizard
- 13WhatSize vs eDirStat
- 14WhatSize vs Folder Size
- 15WhatSize vs Filelight
- 16WhatSize vs SpaceMap
- 17WhatSize vs gdu
- 18WhatSize vs WinDirStat
- 19WhatSize vs OverClean
- 20WhatSize vs Disk Usage Analyzer
WhatSize alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | TreeSize | 9.2 | Free plan | Free | Windows |
| 2 | WizTree | 8.8 | Free plan | $25/mo | Mac, Windows |
| 3 | LumaDisk | 8.6 | Free plan | $6.89/mo | Mac, Windows |
| 4 | FolderSizes | 8.5 | Free plan | Free | Windows |
| 5 | SizeTrend | 8.4 | Free plan | Free | Windows |
| 6 | SpaceMonger | 8.2 | No | — | Windows |
| 7 | Disk Analyzer Pro | 8.2 | Free plan | Free | Mac, Windows |
| 8 | StorageRadar | 8.1 | Free plan | $9.99/mo | Mac |
| 9 | DiskAtlas | 8.0 | Free plan | $5/mo | Mac |
| 10 | Disk Auditor | 7.9 | Free plan | Free | Windows |
| 11 | Drive Atlas | 7.9 | Free plan | $20/mo | Linux, Windows |
| 12 | Space Wizard | 7.9 | Free plan | Free | Linux, Mac, Windows |
| 13 | eDirStat | 7.7 | No | — | Linux, Mac, Web, Windows |
| 14 | Folder Size | 7.7 | Free plan | $24.95/mo | Windows |
| 15 | Filelight | 7.6 | No | — | Linux, Windows |
| 16 | SpaceMap | 7.6 | Free plan | Free | Mac |
| 17 | gdu | 7.6 | Free plan | Free | Linux, Mac, Web, Windows |
| 18 | WinDirStat | 7.5 | No | — | Windows |
| 19 | OverClean | 7.5 | Free plan | $9.99/mo | Mac |
| 20 | Disk Usage Analyzer | 7.4 | Free plan | Free | Linux |
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Questions about WhatSize alternatives
What is the best alternative to WhatSize?
TreeSize, number 1 in disk space analyzers with a score of 9.2 out of 10. The others here: WizTree, LumaDisk, FolderSizes and 16 more.
What is the best free alternative to WhatSize?
TreeSize is the best-ranked alternative with a free plan. 16 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.