Comparison of defragmentation software

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The following is a comparison of notable file system defragmentation software:

Contents

ProgramDeveloper License Supported file systemsSupported platforms GUI CLI Script Scheduler Boot time Auto defrag when idle Stable release
Auslogics Disk DefragAuslogics Freeware FAT16, FAT32, NTFS Windows XP and laterYesYesYesYesYes10.2.0.1 (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] YesNoYes, with Windows Task Scheduler NoYes, with Windows Task Scheduler [a] 1.8 (July 4, 2016) [1]
Defraggler Piriform Freeware FAT32, NTFS, exFAT, ReFS [2] Windows XP and laterYesYesNoYes, with Windows Task Scheduler [b] YesYes, 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		YesYesYesYes, with Windows Task Scheduler NoNoSame as Windows
Diskeeper Condusiv Technologies Discontinued (formerly trialware FAT16, FAT32, NTFSWindows XP and laterYes [5] Yes [6] Yes [7] Yes [c] Yes [8] Yes2020 (20.0.1302) (March 23, 2020 (2020-03-23)) [±]
JkDefrag Jeroen Kessels GNU GPL FAT & NTFSWindows 2000, Windows XP, Windows VistaYesYes3.36.0.2 / August 31, 2008
O&O Defrag O&O Software Trialware FAT16, FAT32, NTFS, exFAT, ReFSWindows NT 4.0, 2000, XP, Vista, 7, 8.x, 10, 11. Server 2003, 2008, 2012, 2016, 2019, 2022YesYesYesYesYesYes27.0.8038 (September 12, 2023) [±]
PageDefrag Microsoft Freeware FAT16, FAT32, NTFSWindows 2000, XPNoNoNoNoYesNo
PerfectDisk Raxco Discontinued (formerly 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] YesEnterprise Console edition onlyYesYesYesPerfectDisk 14 Build 900 (2021) [10]
UltimateDefrag DiskTrix Trialware [11] FAT32, NTFSWindows XP and laterYesYesYesYes6.1.2.0 (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 laterYesYesYes [d] [13] Yes, with Windows Task Scheduler YesYes, with Windows Task Scheduler [a] 14.0.0 (April 19, 2025;3 months ago (2025-04-19)) [±] , Open source version discontinued [14]
Vopt GoldenBow (or DataTuna) [15] Discontinued (formerly freeware)FAT32, NTFSWindows 2000 and laterYesYes9.21.0001 (November 14, 2010 (2010-11-14)) [±]
ProgramDeveloperLicenseSupported file systemsSupported platformsGUICLIScriptSchedulerBoot timeAuto defrag when idleStable release

Notes

  1. 1 2 3 Windows Task Scheduler "Idle" schedules and options settings will be applied to scheduled tasks.
  2. ↑ Defraggler's GUI only provides an interface to configure defragmenting activity in Windows Task Scheduler. [3]
  3. ↑ Condusiv Technologies claims its InvisiTasking technology eliminates the need for scheduled defragmentation.
  4. ↑ UltraDefrag can be run in batch scripts and apply several parameters separately for each disk.

References

  1. 1 2 Russinovich, Mark (July 4, 2016). "Contig v1.8". Windows Sysinternals. Microsoft. Retrieved June 9, 2011.
  2. ↑ "Defraggler - Version History". Prirform. Retrieved July 21, 2015.
  3. ↑ "Scheduler". Piriform.com. Piriform. Retrieved December 13, 2013.
  4. ↑ Defraggler version history on piriform.com
  5. ↑ Dragan, Richard (May 4, 2005). "Defraggers". PC Magazine. Ziff Davis. Retrieved November 22, 2010.
  6. ↑ "DKService.exe: What is it? Discover Defrag Components & More". Condusiv Technologies. Retrieved July 25, 2012.
  7. ↑ "Group Policy Setup for Condusiv Technologies Products" (PDF). Condusiv Technologies. 2007. p. 1. Retrieved July 25, 2012.
  8. ↑ "New Boot-Time Defrag in Diskeeper (2008/2009)". Condusiv Technologies. February 3, 2009. Retrieved July 25, 2012.
  9. 1 2 "PerfectDisk System Requirements" . Retrieved 2024-03-19.
  10. ↑ "Changelogs" . Retrieved May 2, 2019.
  11. ↑ "Download UltimateDefrag Free Public Domain Edition". PCWorld. Retrieved April 9, 2013.
  12. ↑ "UltraDefrag - An Open Source Defragmenter". ultradefrag.sourceforge.net. Retrieved May 4, 2018.
  13. ↑ UltraDefrag documentation and UltraDefrag 5.0.4 handbook
  14. ↑ SourceForge comment citation
  15. ↑ which makes available Howard Barry Emerson's VOPT on their own site, at "The excellent VOPT defrag. Free license!". 21 April 2017.
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