Best Disk Defragmentation Software in 2026
Updated
In short: IObit Uninstaller is ranked #1 of 22 as of 5 October 2026, ahead of Auslogics Driver Updater and Btrfsmaintenance. The best-ranked option with a free plan is Auslogics Driver Updater. The lowest first paid tier on this page is IObit Uninstaller at $1.23/mo.
When considering disk defragmentation software, start with the drives and filesystems you need to support. Compared on drive types and filesystem support, these tools also differ in automatic, scheduled, and boot-time optimization, as well as maximum drive count. Free-plan availability and paid-from pricing provide further details for comparing options. IObit Smart Defrag, Disk SpeedUp, and Puran Defrag are among the entries shown. Check the compatibility criteria against your setup, then weigh the optimization modes and limits that matter for your drive tasks.
22 disk defragmentation software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 IObit Uninstaller No phone app RecognisedPhone appDocumentedFree plan 6.4$1.23/mo Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 2 Auslogics Driver Updater No phone app RecognisedPhone appDocumentedFree plan 6.1Free Drive types: hddScheduled optimization: YesAutomatic optimization: Yes
- 3 Btrfsmaintenance No phone app RecognisedPhone appDocumentedFree plan 6.1Free Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 4 Disk SpeedUp No phone app RecognisedPhone appDocumentedFree plan 6.1Free Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 5 e4defrag No phone app RecognisedPhone appDocumentedFree plan 6.1Free
- 6 Puran Defrag No phone app RecognisedPhone appDocumentedFree plan 6.1Free Drive types: hddScheduled optimization: YesAutomatic optimization: Yes
- 7 WinContig No phone app RecognisedPhone appDocumentedFree plan 6.1Free Drive types: bothScheduled optimization: Yes
- 8 Defragger No phone app RecognisedPhone appDocumentedFree plan 6.0Free
- 9 FreeDOS Defrag No phone app RecognisedPhone appDocumentedFree plan 6.0Free
- 10 IObit Smart Defrag No phone app RecognisedPhone appDocumentedFree plan 6.0$1.67/mo Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 11 xfs_fsr No phone app RecognisedPhone appDocumentedFree plan 6.0Free
- 12 DiskTuna No phone app RecognisedPhone appDocumentedFree plan 5.6 Drive types: hddScheduled optimization: YesAutomatic optimization: No
- 13 O&O AppBuster No phone app RecognisedPhone appDocumentedFree plan 5.6 Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 14 Shake No phone app RecognisedPhone appDocumentedFree plan 5.6
- 15 DymaxIO No phone app RecognisedPhone appDocumentedFree plan 5.5$5.75/mo Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 16 Defraginator No phone app RecognisedPhone appDocumentedFree plan 5.4
- 17 Microsoft Quick Assist No phone app RecognisedPhone appDocumentedFree plan 5.4
- 18 UltraDefrag No phone app RecognisedPhone appDocumentedFree plan 5.4 Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 19 UltimateDefrag 6 No phone app RecognisedPhone appDocumentedFree plan 5.3 Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
- 20 Windows Backup No phone app RecognisedPhone appDocumentedFree plan 5.3
- 21 Autoruns No phone app RecognisedPhone appDocumentedFree plan 5.1
- 22 O&O Defrag No phone app RecognisedPhone appDocumentedFree plan 5.1 Drive types: bothScheduled optimization: YesAutomatic optimization: Yes
Compare all 22 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Drive types | Scheduled optimization |
|---|---|---|---|---|---|---|---|---|
| 1 | IObit Uninstaller | 6.4 | Free plan | $1.23/mo | Yes | — | both | Yes |
| 2 | Auslogics Driver Updater | 6.1 | Free plan | Free | Yes | — | hdd | Yes |
| 3 | Btrfsmaintenance | 6.1 | Free plan | Free | Yes | — | both | Yes |
| 4 | Disk SpeedUp | 6.1 | Free plan | Free | Yes | — | both | Yes |
| 5 | e4defrag | 6.1 | Free plan | Free | — | — | — | — |
| 6 | Puran Defrag | 6.1 | Free plan | Free | Yes | — | hdd | Yes |
| 7 | WinContig | 6.1 | Free plan | Free | Yes | — | both | Yes |
| 8 | Defragger | 6.0 | Free plan | Free | — | — | — | — |
| 9 | FreeDOS Defrag | 6.0 | Free plan | Free | — | — | — | — |
| 10 | IObit Smart Defrag | 6.0 | Free plan | $1.67/mo | Yes | — | both | Yes |
| 11 | xfs_fsr | 6.0 | Free plan | Free | Yes | — | — | — |
| 12 | DiskTuna | 5.6 | No | — | Yes | — | hdd | Yes |
| 13 | O&O AppBuster | 5.6 | No | — | No | 49.95 one-time | both | Yes |
| 14 | Shake | 5.6 | No | — | Yes | — | — | — |
| 15 | DymaxIO | 5.5 | No | $5.75/mo | No | — | both | Yes |
| 16 | Defraginator | 5.4 | No | — | — | — | — | — |
| 17 | Microsoft Quick Assist | 5.4 | No | — | Yes | — | — | — |
| 18 | UltraDefrag | 5.4 | No | — | No | — | both | Yes |
| 19 | UltimateDefrag 6 | 5.3 | No | — | No | 29.95 one-time | both | Yes |
| 20 | Windows Backup | 5.3 | No | — | Yes | — | — | — |
| 21 | Autoruns | 5.1 | No | — | Yes | — | — | — |
| 22 | O&O Defrag | 5.1 | No | — | No | 49.95 one-time | both | Yes |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which disk defragmentation software is ranked first on Samsung Mobile US Press?
IObit Uninstaller is ranked #1 of 22 with a score of 6.4. Auslogics Driver Updater is second and Btrfsmaintenance third.
How many of these have a free plan?
11 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, IObit Uninstaller has the lowest first paid tier we found: $1.23/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.