DownloadPlease note, here you can find the latest open source release of UltraDefrag (7.1.4). The most recent UltraDefrag release (12.0.0) can be found on our official website: https://ultradefrag.net
UltraDefrag is a disk defragmenter for Windows, which supports defragmentation of locked system files by running during the boot process. It is easy to use without any complicated scripting or a huge load of configuration settings. You can filter the files processed by size, number of fragments, file name and path. You can terminate the process early by specifying an execution time limit.
Features
- Automatic defragmentation of disks
- Automatic disks cleanup before defragmentation
- Graphical user interface to follow the process visually
- Boot time defragmentation for system files processing
- Console interface for batch processing or setting up scheduled tasks
- Process single files, folders or drives from the Explorer's context menu
- Specialized processing algorithms for each situation
- Available for both 32bit and 64bit Windows
- Optional quick test mode to get a preview of the resulting disk usage
Project Samples
License
GNU General Public License version 2.0 (GPLv2)
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User Reviews
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Thanks to the developers of UltraDefrag for this excellent program. My Windows 7 (32-bit) was getting very slow due to a badly fragmented MFT from years of use, meaning opening simple file/dir scanning programs like Irfan could take up to 10 seconds while they accessed the MFT. UltraDefrag fixed this problem perfectly, even allowing me to continue using the computer while it did its work (which impressed me) NOTE! if you still use 32-bit Windows 7 like me, then you might find (as I did) that the i386 package is missing vital exe files. Google "UltraDefrag old 32-bit versions" to find an older version that will work (I used version 7.0.2, dated 2016, which I downloaded from fosshub.com then virus-checked its exe and dll files at Virustotal)
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It is my choice and favorite tool to speedup fragmented disk. Thank you a lot.
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Fa molts anys que l'he usat, i sempre perfecte. He provat algun altre però he tornat ràpidament al UltraDefrag. Son molts anys treballant amb aquest programa i és un dels meus imprescindibles!! Un 10. Moltes gràcies.
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Easily the best one I have used. Even O&O Defrag cannot beat this one and they made it as number 1 on the best defraggers list! To the people having issues: Either stop trolling or learn how to use the configuration correctly!
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Yes the first time you run this program, it takes a long, long time but it is worth it... I have used many, many defrag programs and this one can make an old computer run faster than it was new. the boot time process really speeds up your computer starting up and shutting down.. I have never had a problem with Ultra Defrag and have never seen another program do a more thorough job..