UltraDefrag

UltraDefrag
Original authorsDmitri Arkhangelski, Stefan Pendl, Justin Dearing, Sayem Chaklader
DevelopersGreen Gate Systems, LLC
ReleaseJuly 5, 2007; 19 years ago (2007-07-05)
Stable release15.0.0 (January 24, 2026; 6 months ago (2026-01-24)) [±]
Written inC, C++, Lua, JavaScript
Operating systemWindows 11
Windows 10
Windows 8.1
Windows 8
Windows 7
Windows Vista
Windows XP
Windows 2000
Windows NT 4.0
PlatformIA-32, x64, IA-64
TypeDefragmentation software
LicenseProprietary for 8.0.0+,
GNU GPL for 7.1.x and under
Websiteultradefrag.net
Repositorysourceforge.net/projects/ultradefrag/ (Only open source code release of UltraDefrag)

UltraDefrag is a disk defragmentation utility for Microsoft Windows. Prior to version 8.0.0 it was released under the GNU General Public License.

In 2018, UltraDefrag sources have been relicensed to Green Gate Systems. Their enhanced version, released under a proprietary license, features placement of selected files to the fastest disk sectors, disk health monitoring and protection, automatic defragmentation, disk cleanup before defragmentation, graphical interface for setting user preferences, optimization of solid state drives, full compatibility with Windows 11 and 10, and is said to have much faster disk processing algorithms.[1]

UltraDefrag uses the defragmentation part of Windows API and works on Windows NT 4.0 and later. It supports FAT12, FAT16, FAT32, exFAT, and NTFS file systems.[2]

Jean-Pierre André, one of the developers of NTFS-3G, has created a fork of UltraDefrag 5 that runs on Linux. It only has a command-line interface.[3]

Features

  • Placement of selected files to the fastest disk sectors
  • Disk health monitoring and protection
  • Automatic defragmentation
  • Windows updates cleanup before defragmentation
  • Automatic temporary files cleanup before defragmentation
  • Defragmentation of individual files and folders
  • Defragmentation of locked system files
  • Defragmentation of NTFS metafiles (including MFT) and streams
  • Exclusion of files by path, size and number of fragments
  • Optimization of disks
  • Disk processing time limit
  • Defragmentation of disks having a certain fragmentation level
  • Automatic hibernation or shutdown after the job completion
  • Multilingual graphical interface (over 60 languages available)
  • One click defragmentation via Windows Explorer's context menu
  • Command line interface
  • Portable edition
  • Full support of 64-bit editions of Windows

See also

References

  1. ^ "UltraDefrag 7.1.0 and 8.0.0 have been released". SourceForge. September 28, 2018. Retrieved October 27, 2025.
  2. ^ "UltraDefrag Handbook: Introduction". UltraDefrag Handbook. Retrieved October 27, 2025.
  3. ^ "Advanced NTFS-3G Features". jp-andre.pagesperso-orange.fr. Archived from the original on December 14, 2012. Retrieved October 10, 2019.
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