Best SpaceObServer Alternatives in 2026
Updated
20 apps from disk space analyzers ranked against SpaceObServer on the same published basis.
- 1SpaceObServer vs TreeSize
- 2SpaceObServer vs WizTree
- 3SpaceObServer vs Disk Usage Analyzer
- 4SpaceObServer vs FolderSizes
- 5SpaceObServer vs SizeTrend
- 6SpaceObServer vs Disk Analyzer Pro
- 7SpaceObServer vs StorageRadar
- 8SpaceObServer vs Disk Auditor
- 9SpaceObServer vs Drive Atlas
- 10SpaceObServer vs DiskAtlas
- 11SpaceObServer vs LumaDisk
- 12SpaceObServer vs Folder Size
- 13SpaceObServer vs Space Wizard
- 14SpaceObServer vs OverClean
- 15SpaceObServer vs gdu
- 16SpaceObServer vs SpaceMap
- 17SpaceObServer vs eDirStat
- 18SpaceObServer vs DiskBrain
- 19SpaceObServer vs agedu
- 20SpaceObServer vs ncdu
SpaceObServer alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | TreeSize | 8.0 | Free plan | Free | Windows |
| 2 | WizTree | 8.0 | Free plan | $25/mo | Mac, Windows |
| 3 | Disk Usage Analyzer | 7.8 | Free plan | Free | Linux |
| 4 | FolderSizes | 7.8 | Free plan | Free | Windows |
| 5 | SizeTrend | 7.8 | Free plan | Free | Windows |
| 6 | Disk Analyzer Pro | 7.7 | Free plan | Free | Mac, Windows |
| 7 | StorageRadar | 7.6 | Free plan | $9.99/mo | Mac |
| 8 | Disk Auditor | 7.5 | Free plan | Free | Windows |
| 9 | Drive Atlas | 7.5 | Free plan | $20/mo | Linux, Windows |
| 10 | DiskAtlas | 7.4 | Free plan | $5/mo | Mac |
| 11 | LumaDisk | 7.4 | Free plan | $6.89/mo | Mac, Windows |
| 12 | Folder Size | 7.3 | Free plan | $24.95/mo | Windows |
| 13 | Space Wizard | 7.3 | Free plan | Free | Linux, Mac, Windows |
| 14 | OverClean | 7.2 | Free plan | $9.99/mo | Mac |
| 15 | gdu | 7.2 | Free plan | Free | Linux, Mac, Web, Windows |
| 16 | SpaceMap | 7.1 | Free plan | Free | Mac |
| 17 | eDirStat | 7.0 | No | — | Linux, Mac, Web, Windows |
| 18 | DiskBrain | 7.0 | Free plan | $2/mo | Windows |
| 19 | agedu | 7.0 | Free plan | Free | Linux, Web |
| 20 | ncdu | 7.0 | Free plan | Free | Linux, Mac, self-hosted, Windows |
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Questions about SpaceObServer alternatives
What is the best alternative to SpaceObServer?
TreeSize, number 1 in disk space analyzers with a score of 8.0 out of 10. The others here: WizTree, Disk Usage Analyzer, FolderSizes and 16 more.
What is the best free alternative to SpaceObServer?
TreeSize is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.