Best UltraDefrag Alternatives in 2026
Updated
20 tools from disk defragmentation software ranked against UltraDefrag on the same published basis.
- 1UltraDefrag vs IObit Uninstaller
- 2UltraDefrag vs O&O AppBuster
- 3UltraDefrag vs Auslogics Driver Updater
- 4UltraDefrag vs DymaxIO
- 5UltraDefrag vs Puran Defrag
- 6UltraDefrag vs WinContig
- 7UltraDefrag vs Disk SpeedUp
- 8UltraDefrag vs DiskTuna
- 9UltraDefrag vs Btrfsmaintenance
- 10UltraDefrag vs Defragger
- 11UltraDefrag vs e4defrag
- 12UltraDefrag vs IObit Smart Defrag
- 13UltraDefrag vs UltimateDefrag 6
- 14UltraDefrag vs Defraginator
- 15UltraDefrag vs FreeDOS Defrag
- 16UltraDefrag vs Microsoft Quick Assist
- 17UltraDefrag vs Shake
- 18UltraDefrag vs xfs_fsr
- 20UltraDefrag vs O&O Defrag
- 21UltraDefrag vs Windows Backup
UltraDefrag alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | IObit Uninstaller | 7.1 | Free plan | $1.23/mo | Windows |
| 2 | O&O AppBuster | 6.7 | No | — | Windows |
| 3 | Auslogics Driver Updater | 6.6 | Free plan | Free | Windows |
| 4 | DymaxIO | 6.6 | No | $5.75/mo | Windows |
| 5 | Puran Defrag | 6.6 | Free plan | Free | Windows |
| 6 | WinContig | 6.6 | Free plan | Free | Windows |
| 7 | Disk SpeedUp | 6.5 | Free plan | Free | Windows |
| 8 | DiskTuna | 6.5 | No | — | Windows |
| 9 | Btrfsmaintenance | 6.4 | Free plan | Free | Linux, self-hosted |
| 10 | Defragger | 6.4 | Free plan | Free | Linux |
| 11 | e4defrag | 6.4 | Free plan | Free | Linux |
| 12 | IObit Smart Defrag | 6.4 | Free plan | $1.67/mo | Windows |
| 13 | UltimateDefrag 6 | 6.4 | No | — | Windows |
| 14 | Defraginator | 6.3 | No | — | Linux, Mac, Windows |
| 15 | FreeDOS Defrag | 6.3 | Free plan | Free | self-hosted |
| 16 | Microsoft Quick Assist | 6.3 | No | — | Mac, Web, Windows |
| 17 | Shake | 6.3 | No | — | Linux |
| 18 | xfs_fsr | 6.3 | Free plan | Free | Linux |
| 20 | O&O Defrag | 5.8 | No | — | Windows |
| 21 | Windows Backup | 5.8 | No | — | Windows |
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Questions about UltraDefrag alternatives
What is the best alternative to UltraDefrag?
IObit Uninstaller, number 1 in disk defragmentation software with a score of 7.1 out of 10. The others here: O&O AppBuster, Auslogics Driver Updater, DymaxIO and 16 more.
What is the best free alternative to UltraDefrag?
IObit Uninstaller is the best-ranked alternative with a free plan. 11 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, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.