Please note, here you can find the latest open source release of UltraDefrag (7.1.4). The most recent UltraDefrag release (14.0.0) 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

Project Activity

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License

GNU General Public License version 2.0 (GPLv2)

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User Ratings

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features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
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support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 3 / 5

User Reviews

  • Ich möchte mich herzlich für die aktuelle Version 14 bedanken. UltraDefrag läuft bei mir stabil, effizient und ohne unnötige Spielereien – genau so, wie ein Werkzeug für Systempflege sein sollte. Die Boot-Time-Optimierung, die klare Struktur und die Möglichkeit zur Skriptintegration machen es für mich zu einem der besten Defragmentierer überhaupt. Was ich mich allerdings frage: Warum ist UltraDefrag nicht annähernd so bekannt wie andere Programme, die mit viel Marketing auftreten, aber technisch deutlich schwächer arbeiten? Vielleicht liegt es daran, dass UltraDefrag sich auf Funktion statt Fassade konzentriert – was ich persönlich sehr schätze. Danke an das Entwicklerteam für die jahrelange Arbeit und die diagnostische Klarheit, die dieses Tool ausstrahlt. Ich freue mich bereits auf kommende Versionen und Weiterentwicklungen von UltraDefrag. Wenn Version 14 schon so überzeugend arbeitet, bin ich gespannt, welche Optimierungen, Funktionen oder diagnostischen Feinheiten noch folgen. Es ist selten, dass ein Tool so konsequent auf Effizienz und Klarheit setzt – und ich hoffe, dass dieser Weg fortgesetzt wird, fernab von überladenen Oberflächen und ritualisierter Feature-Inflation.
  • 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)
  • I did the first Greek translation of this project, then add some other stuff and after a while I see 2 other "Greek" translators who translate like 1-2 words basically saying "we did it" ..I was mad but nothing happened, they got my credits ...then I see it turns into commercial product, right ...it was suppose to be open source not turn it into profit, I didn't sign for this
  • The program starts a new analysis every time you want to defrag even though you just ran one before. The developer updated the version 7 here just to add ads for their paid version 9. The ads pop up everywhere and makes it a hassle to use. Overall I don't feel safe keeping this on my computer.
  • 1 - It seems to be good. I tried it years ago, several times (off-&-on) through various operating systems, yet, STILL -- they can't get it to shut-down your computer, when done defragging! WHYYY would I want to buy that problem? 2 - Plus, why is the g.u.i. sooo small? I have to wear/use my reading-glasses, to see it (read the button pop-ups). Perhaps they could increase the over-all size? 3 - Also, i've begun replacing my h.d.d units, with s.s.d.'s (which we're NOT supposed to de-frag) sooo -- wht now? What's to become of this software? SOME-ONE, please advise? thanks much! kbr
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Additional Project Details

Operating Systems

Windows, Windows Server

Languages

Albanian, Arabic, Belarusian, Bengali, Bosnian, Brazilian Portuguese, Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, Galician, Georgian, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latin, Latvian, Lithuanian, Macedonian, Malay, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, Tamil, Thai, Turkish, Ukrainian, Vietnamese

Intended Audience

Advanced End Users, End Users/Desktop, System Administrators

User Interface

Command-line, Win32 (MS Windows), wxWidgets

Programming Language

C, C++, JavaScript, Lua

Related Categories

C++ File Managers, C++ Systems Administration Software, C++ File Systems, C File Managers, C Systems Administration Software, C File Systems, Lua File Managers, Lua Systems Administration Software, Lua File Systems, JavaScript File Managers, JavaScript Systems Administration Software, JavaScript File Systems

Registered

2007-06-25