UltraDefrag on Windows 8
|Original author(s)||Dmitri Arkhangelski, Stefan Pendl, Justin Dearing, Sayem Chaklader|
|Stable release||6.1.0 (April 19, 2015[±])|
|Preview release||7.0.0 beta2 (October 19, 2014)|
|Operating system||Windows NT 4.0
Windows XP x64 Edition
|License||GNU General Public License|
UltraDefrag is an open-source disk defragmenting utility for Microsoft Windows. It is released under the GNU General Public License. The only other Windows-based defragmentation utility with a GNU GPL was JkDefrag, but its GPL version was discontinued in 2008.
UltraDefrag uses Microsoft's defragmentation API and works on Windows NT, 2000, XP, Server 2003, Vista, and 7 operating systems. It supports FAT12, FAT16, FAT32, exFAT, and NTFS file systems.
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