17.3
Free planOpen sourceWebLinuxmacOS
Best Disk Defragmentation Software in 2026
Disk defragmentation software focuses on drive optimization, and the listed options can be compared by how and where that optimization is configured. The first entries are IObit Uninstaller, O&O AppBuster, Auslogics Driver Updater, and Disk SpeedUp. Check supported drive types and filesystems, then consider whether automatic, scheduled, or boot-time optimization matters for your setup. Maximum drive count is another…
26.9
Btrfsmaintenance is a set of scripts for administering Btrfs filesystems by automating scrub, balance, trim, and defragmentation.
Free planOpen sourceLinuxSelf-hosted
36.6
Disk SpeedUp is a free Windows utility for analyzing and defragmenting disks, as well as optimizing individual files and folders.
Free planWindows
- 4
Autoruns
Autoruns is a free Windows utility for examining programs and drivers set to run during startup, login, or when certain built-in Windows applications open.
Free planWindows6.3Free plan - 5
DymaxIO
DymaxIO is Windows performance software designed to reduce I/O bottlenecks and improve application response times on PCs, laptops, servers, virtual…
Windows6.2From $69 a year - 6
Windows File Recovery
Windows File Recovery is a free command-line app for trying to recover deleted files from local storage when they cannot be restored from the Recycle Bin.
Free planWindows6.2Free plan - 7
Auslogics Disk Defrag
Free planWindows6.0From €26.25 a year - 8
IObit Smart Defrag
Free planWindows6.0From $19.99 a year - 9
UltimateDefrag 6
UltimateDefrag 6 is a Windows utility for defragmenting disks and optimizing where files are stored.
Windows5.9$19.97 one-time - 10
e4defrag
e4defrag is a free, open-source Linux utility for defragmenting extent-based files on ext4 filesystems.
Free planLinux5.8Free plan - 11
Puran Defrag
Puran Defrag is a free Windows utility that defragments files and optimizes hard disk drives.
Free planWindows5.8Free plan - 12
WinContig
WinContig is a free Windows utility for defragmenting selected files or entire folders, without requiring a whole-disk defragmentation.
Free planWindows5.8Free plan - 13
Defragger
Defragger is a graphical Linux filesystem defragmenter that maps file, free-space, and metadata allocation and analyzes fragmentation.
Free planLinux5.7Free plan - 14
xfs_fsr
xfs_fsr is a free Linux utility in the xfsprogs project that reorganizes mounted XFS filesystems one file at a time.
Free planLinux5.7Free plan - 15
FreeDOS Defrag
FreeDOS Defrag, also called DEFRAG, is a free DOS utility that brings file fragments together to improve loading times from a disk.
Free planSelf-hosted5.6Free plan - 16
Defraginator
Defraginator is a free, open-source desktop app for defragmenting `.bin` ROM and firmware images on SD cards and other removable media.
LinuxmacOSWindows5.5 - 17
DiskTuna
DiskTuna’s JPEG-Repair Toolkit combines JPEG-Repair for damaged photos with JpegDigger for recovering lost images.
Windows5.5 - 18
Shake
Shake is a free userspace defragmenter for GNU/Linux that can reorganize fragmented files while the system is running.
Linux5.3 - 19
UltraDefrag
UltraDefrag 15 is a paid Windows disk defragmenter designed to reassemble fragmented files and support disk optimization.
Windows5.3 - 20
O&O Defrag
Windows5.2$49.95 one-time