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 FolderSizes
- 4WhatSize vs SizeTrend
- 5WhatSize vs Disk Analyzer Pro
- 6WhatSize vs StorageRadar
- 7WhatSize vs Drive Atlas
- 8WhatSize vs Disk Auditor
- 9WhatSize vs DiskAtlas
- 10WhatSize vs WinDirStat
- 11WhatSize vs Filelight
- 12WhatSize vs SpaceMonger
- 13WhatSize vs LumaDisk
- 14WhatSize vs Folder Size
- 15WhatSize vs SpaceObServer
- 16WhatSize vs Disk Usage Analyzer
- 17WhatSize vs OmniDiskSweeper
- 18WhatSize vs DiskSavvy
- 19WhatSize vs eDirStat
- 20WhatSize vs Space Wizard
WhatSize alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | TreeSize | 7.5 | Free plan | Free | Windows |
| 2 | WizTree | 7.5 | Free plan | $25/mo | Mac, Windows |
| 3 | FolderSizes | 7.4 | Free plan | Free | Windows |
| 4 | SizeTrend | 7.3 | Free plan | Free | Windows |
| 5 | Disk Analyzer Pro | 7.1 | Free plan | Free | Mac, Windows |
| 6 | StorageRadar | 7.0 | Free plan | $9.99/mo | Mac |
| 7 | Drive Atlas | 7.0 | Free plan | $20/mo | Linux, Windows |
| 8 | Disk Auditor | 6.9 | Free plan | Free | Windows |
| 9 | DiskAtlas | 6.9 | Free plan | $5/mo | Mac |
| 10 | WinDirStat | 6.8 | No | — | Windows |
| 11 | Filelight | 6.8 | No | — | Linux, Windows |
| 12 | SpaceMonger | 6.8 | No | — | Windows |
| 13 | LumaDisk | 6.8 | Free plan | $6.89/mo | Mac, Windows |
| 14 | Folder Size | 6.8 | Free plan | $24.95/mo | Windows |
| 15 | SpaceObServer | 6.7 | No | — | Windows |
| 16 | Disk Usage Analyzer | 6.7 | No | — | Linux |
| 17 | OmniDiskSweeper | 6.6 | No | — | Mac |
| 18 | DiskSavvy | 6.6 | No | — | Windows |
| 19 | eDirStat | 6.6 | No | — | Linux, Mac, Windows |
| 20 | Space Wizard | 6.6 | Free plan | Free | Linux, Mac, Windows |
Make your platform an alternative to WhatSize
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about WhatSize alternatives
What is the best alternative to WhatSize?
TreeSize, number 1 in disk space analyzers with a score of 7.5 out of 10. The others here: WizTree, FolderSizes, SizeTrend and 16 more.
What is the best free alternative to WhatSize?
TreeSize is the best-ranked alternative with a free plan. 12 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.