Best DiskSizer Alternatives in 2026
Updated
20 apps from disk space analyzers ranked against DiskSizer on the same published basis.
- 1DiskSizer vs TreeSize
- 2DiskSizer vs FolderSizes
- 3DiskSizer vs WizTree
- 4DiskSizer vs StorageRadar
- 5DiskSizer vs SizeTrend
- 6DiskSizer vs Folder Size
- 7DiskSizer vs Disk Auditor
- 8DiskSizer vs DiskAtlas
- 9DiskSizer vs LumaDisk
- 10DiskSizer vs Space Wizard
- 11DiskSizer vs winTrim
- 12DiskSizer vs QDirStat
- 13DiskSizer vs gdu
- 14DiskSizer vs DiskMapper
- 15DiskSizer vs SpaceObServer
- 16DiskSizer vs DiskSavvy
- 17DiskSizer vs Capacitra
- 18DiskSizer vs Flare Scan
- 19DiskSizer vs eDirStat
- 20DiskSizer vs DiskTree
DiskSizer alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | TreeSize | 8.2 | Free plan | Free | Windows |
| 2 | FolderSizes | 8.2 | Free plan | Free | Windows |
| 3 | WizTree | 8.2 | Free plan | $25/mo | Mac, Windows |
| 4 | StorageRadar | 7.8 | Free plan | $9.99/mo | Mac |
| 5 | SizeTrend | 7.8 | Free plan | Free | Windows |
| 6 | Folder Size | 7.7 | Free plan | $24.95/mo | Windows |
| 7 | Disk Auditor | 7.6 | Free plan | Free | Windows |
| 8 | DiskAtlas | 7.6 | Free plan | $5/mo | Mac |
| 9 | LumaDisk | 7.6 | Free plan | $6.89/mo | Mac, Windows |
| 10 | Space Wizard | 7.4 | Free plan | Free | Linux, Mac, Windows |
| 11 | winTrim | 7.3 | Free plan | Free | Linux, Mac, Windows |
| 12 | QDirStat | 7.2 | No | — | Linux, Mac |
| 13 | gdu | 7.2 | No | — | Linux, Mac, Windows |
| 14 | DiskMapper | 7.2 | Free plan | Free | Mac |
| 15 | SpaceObServer | 7.1 | No | — | Windows |
| 16 | DiskSavvy | 7.1 | No | — | Windows |
| 17 | Capacitra | 7.1 | No | — | Windows |
| 18 | Flare Scan | 7.0 | No | — | Mac |
| 19 | eDirStat | 7.0 | No | — | Linux, Mac, Windows |
| 20 | DiskTree | 7.0 | Free plan | $1.25/mo | Mac |
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Questions about DiskSizer alternatives
What is the best alternative to DiskSizer?
TreeSize, number 1 in disk space analyzers with a score of 8.2 out of 10. The others here: FolderSizes, WizTree, StorageRadar and 16 more.
What is the best free alternative to DiskSizer?
TreeSize is the best-ranked alternative with a free plan. 13 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.