The following is a comparison of notable file system defragmentation software:
| Program | Developer | License | Supported file systems | Supported platforms | GUI | CLI | Script | Scheduler | Boot time | Auto defrag when idle | Stable release |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Auslogics Disk Defrag | Auslogics | Freeware | FAT16, FAT32, NTFS | Windows XP and later | Yes | Yes | Yes | Yes | Yes | 10.2.0.1 (Free), 4.11.0.7 (Ultimate) (January 26, 2022 (2022-01-26) (Free), March 3, 2020 (2020-03-03) (Ultimate)) [±] | |
| AVG PC TuneUp | AVG Technologies | Trialware | 2015 (v15.0.1001.238) (November 30, 2014) | ||||||||
| Contig | Microsoft | Freeware | NTFS | Windows XP and later; Windows Server 2003 and later |
No[1] | Yes | No | Yes, with Windows Task Scheduler | No | Yes, with Windows Task Scheduler[a] | 1.8 (July 4, 2016)[1] |
| Defraggler | Piriform | Freeware | FAT32, NTFS, exFAT, ReFS[2] | Windows XP and later | Yes | Yes | No | Yes, with Windows Task Scheduler[b] | Yes | Yes, with Windows Task Scheduler[a] | 2.22.995 [4] (May 2, 2018 (2018-05-02)) [±] |
| Drive Optimizer (formerly Disk Defragmenter) | Microsoft | Bundled with Microsoft Windows | FAT16, FAT32, NTFS, ReFS | Windows 2000 and later; Windows 95 and later |
Yes | Yes | Yes | Yes, with Windows Task Scheduler | No | No | Same as Windows |
| Diskeeper | Condusiv Technologies | Discontinued (formerly trialware | FAT16, FAT32, NTFS | Windows XP and later | Yes[5] | Yes[6] | Yes[7] | Yes[c] | Yes[8] | Yes | 2020 (20.0.1302) (March 23, 2020 (2020-03-23)) [±] |
| JkDefrag | Jeroen Kessels | GNU GPL | FAT & NTFS | Windows 2000, Windows XP, Windows Vista | Yes | Yes | 3.36.0.2 / August 31, 2008 | ||||
| O&O Defrag | O&O Software | Trialware | FAT16, FAT32, NTFS, exFAT, ReFS | Windows NT 4.0, 2000, XP, Vista, 7, 8.x, 10, 11. Server 2003, 2008, 2012, 2016, 2019, 2022 | Yes | Yes | Yes | Yes | Yes | Yes | 27.0.8038 (September 12, 2023) [±] |
| PageDefrag | Microsoft | Freeware | FAT16, FAT32, NTFS | Windows 2000, XP | No | No | No | No | Yes | No | |
| PerfectDisk | Raxco | Trialware | FAT16, FAT32, exFAT, NTFS, ReFS* and CSVFS[9] | Windows XP SP3 or higher (x86, x64), Windows 10, Windows Server 2003 SP1, Windows Server 2019[9] | Yes | Enterprise Console edition only | Yes | Yes | Yes | PerfectDisk 14 Build 894(May 2, 2019)[10] | |
| UltimateDefrag | DiskTrix | Trialware[11] | FAT32, NTFS | Windows XP and later | Yes | Yes | Yes | Yes | 6.1.2.0 (28 July 2021) | ||
| UltraDefrag | Dmitri Arkhangelski, Justin Dearing, Sayem Chaklader, Stefan Pendl | Commercial software (8.0+) / GNU GPL (7.1.x) | FAT12, FAT16, FAT32, NTFS, exFAT, ReFS[12] | Windows NT 4.0 and later | Yes | Yes | Yes[d][13] | Yes, with Windows Task Scheduler | Yes | Yes, with Windows Task Scheduler[a] | 12.0.0 (March 30, 2024; 3 months ago (2024-03-30)) [±], Open source version discontinued[14] |
| Vopt | GoldenBow (or DataTuna)[15] | Discontinued (formerly freeware) | FAT32, NTFS | Windows 2000 and later | Yes | Yes | 9.21.0001 (November 14, 2010 (2010-11-14)) [±] | ||||
| Program | Developer | License | Supported file systems | Supported platforms | GUI | CLI | Script | Scheduler | Boot time | Auto defrag when idle | Stable release |
