Use Defraggler to defrag your entire hard drive, or individual files - unique in the industry. This compact and portable Windows application supports NTFS and FAT32 file systems.
It differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to process the whole drive. Simply run it, select the file and defragment in seconds. No more struggling with the Windows defragmentation tool!
Defragment exactly what you want
Most defrag tools only allow you to defrag an entire drive. Defraggler lets you specify one or more files, folders, or the whole drive to defragment.
Safe and Secure
When Defraggler reads or writes a file, it uses the exact same techniques that Windows uses. Using Defraggler is just as safe for your files as using Windows.
Compact and portable
Defraggler's tough on your files – and light on your system.
Interactive drive map
At a glance, you can see how fragmented your hard drive is. Defraggler's drive map shows you blocks that are empty, not fragmented, or needing defragmentation.
Give your hard drive a quick touch-up with Quick Defrag.
Defragment free space
Organizes empty disk space to further prevent fragmentation.
Defragment while you sleep - and wake up with a faster PC. Set Defraggler to run daily, weekly or monthly.
No matter what your native tongue is, Defraggler speaks your language. It currently supports 37 languages.
- Improved Analysis and Defrag performance.
- Improved memory usage and management architecture.
- Optimized 64-bit builds on Windows 8 and 10.
- Improved update checking process.
- Updated exception handling and reporting.
- Improved localization and language support.
- Minor GUI improvements.
- Minor bug fixes.
Download notes: Alternatively you can download the latest beta version of this software.
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UltraDefrag is powerful Open Source defragmentation tool for Windows NT.
Free disk defragment and optimize utility for Windows 2000/2003/XP/Vista/X64. Formerly known as JkDefrag.
- Windows 2k/XP
Utility designed to do the tedious task of a complete defragmenting.