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. The only other Windows-based defragmentation utility licensed under the GNU GPL was JkDefrag, discontinued in 2008.[1]

UltraDefrag
UltraDefrag on Windows 8
Original author(s)Dmitri Arkhangelski, Stefan Pendl, Justin Dearing, Sayem Chaklader
Developer(s)Green Gate Systems, LLC
Initial releaseJuly 5, 2007 (2007-07-05)
Stable release9.0.0 (September 21, 2019 (2019-09-21)) [±]
Repositorysourceforge.net/projects/ultradefrag/
Written inC, C++, Lua, JavaScript
Operating systemWindows NT 4.0
Windows 2000
Windows XP
Windows Vista
Windows 7
Windows 8
Windows 8.1
Windows 10
TypeDefragmentation
LicenseProprietary (Shareware) for 8.0.0+,
GNU GPL for 7.1.x and under
Websiteultradefrag.net

In 2018, UltraDefrag sources have been relicensed to Green Gate Systems. Their enhanced 8.0.0 version, released under a proprietary license, features automatic defragmentation and is said to have much faster disk processing algorithms.[2]

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.[3]

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.[4]

Features
  • Automatic 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
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See also

References
  1. Kessels, Jeroen. "JkDefrag v3.36". Archived from the original on 2015-02-15.
  2. "UltraDefrag 7.1.0 and 8.0.0 have been released".
  3. "UltraDefrag Handbook: Introduction".
  4. "Advanced NTFS-3G Features". jp-andre.pagesperso-orange.fr. Retrieved 10 October 2019.
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