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O&O Defrag Alternatives

O&O Defrag is described as 'packs file fragments quickly and securely back together to optimize your hard disk under Windows. You can now see what the program does for your system thanks to graphics and statistics, which give you a before-and-after Defrag contrast' and is a Defrag tool in the os & utilities category. There are more than 10 alternatives to O&O Defrag for Windows and Mac. The best alternative is Defraggler, which is free. Other great apps like O&O Defrag are Auslogics Disk Defrag, IObit Smart Defrag, UltraDefrag and WinExt Free.

O&O Defrag alternatives are mainly Defrag Tools but may also be System Cleaners or Duplicate File Finders. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of O&O Defrag.
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O&O Defrag packs file fragments quickly and securely back together to optimize your hard disk under Windows. You can...

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  1. Defraggler icon

    Defraggler

    20 alternatives to Defraggler 

    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. You can defrag only if the computer is idle for a definable time, so Defraggler does not slow down the computer if you...

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    1.  PortableDefraggler can be used from a USB stick or similar with no prior installation.
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  2. Auslogics Disk Defrag icon

    Auslogics Disk Defrag

    21 alternatives to Auslogics Disk Defrag 

    Disk fragmentation leads to system slowdowns, PC crashes, slow startup and shutdown and sometimes to system failures. Auslogics Disk Defrag is designed for fast optimization of todays modern hard disks. Get the maximum performance out of your expensive hardware investments.

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    This app doesn't have any features at the moment.
    Bundleware

    It suggests to change default search engines and start page to Yahoo in web browsers

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  3. IObit Smart Defrag icon

    IObit Smart Defrag

    20 alternatives to IObit Smart Defrag 

    Smart Defrag is a Reliable and Intelligent Disk Defragmenter with Ultra-fast, Stable, Efficient Defrag Engine.

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    This app doesn't have any features at the moment.
    Bundleware

    The installer may contain adwares. Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/

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  4. UltraDefrag icon

    UltraDefrag

    22 alternatives to UltraDefrag 

    UltraDefrag is a disk defragmenter for Windows. It can quickly defragment everything including files which are usually locked by Windows. For instance, UltraDefrag can re-join paging and hibernation files.

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    Features
    1.  LightweightUltraDefrag consumes less device resources compared to similar apps.
    2.  PortableUltraDefrag can be used from a USB stick or similar with no prior installation.
    3.  Windows Explorer ExtensionUltraDefrag can extend Windows Explorer in various ways, for example add context menu options, etc..
    Defragmentation - disk usage before processing.
    Quick optimization - small files moved back to the beginning.
  5. WinExt Free icon

    WinExt Free

    • Windows
    240 alternatives to WinExt Free 

    Powerful Win utilities: fix registry, clean junk, protect privacy, optimize system, quick launch, find duplicates, folder size, see more recent resources, activity monitor, batch operation, synchronization, disable context menus, skip UAC, trace file.

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  6. Windows Disk Defragmenter icon

    Windows Disk Defragmenter

    21 alternatives to Windows Disk Defragmenter 

    Disk Defragmenter is a computer program included in Microsoft Windows designed to increase access speed by rearranging files stored on a disk to occupy contiguous storage locations, a technique commonly known as defragmenting.

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  7. MyDefrag icon

    MyDefrag

    23 alternatives to MyDefrag 

    MyDefrag (previously JkDefrag) is a disk defragmenter and optimizer (a maintenance utility to make your harddisk faster) for Windows 2000, 2003, XP, Vista, 2008, Win7, and for X64. It is freeware, no time limit, fully functional, no advertisements.

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    1.  Support for scriptingMyDefrag supports scripts and macros to automate or customize tasks.
    2.  PortableMyDefrag can be used from a USB stick or similar with no prior installation.
      Discontinued

      The official website is no longer available. Last version, 4.3.1, released in May 2010, can be still downloaded from FileHippo

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    • PerfectDisk icon

      PerfectDisk

      22 alternatives to PerfectDisk 

      PerfectDisk is a disk defragmenter with a variety of advanced disk management features. It supports automatic background defragmentation, flexible scheduling options, and boot-time defragmentation of locked system files.

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    • System Mechanic icon

      System Mechanic

      • Windows
      152 alternatives to System Mechanic 

      System Mechanic is a suite of tools made to tune up your PC. It can solve several PC problems and optimize performance.

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      Features
      1.  Dark ModeSystem Mechanic supports dark mode for comfortable usage in low light conditions.
      Dashboard
      Speed Up tab
    • Puran Defrag icon

      Puran Defrag

      20 alternatives to Puran Defrag 

      Puran Defrag is a very simple disk defragmenter which will defrag the files and optimize your system, collecting all the fragments of a file and putting them together, as well as moving some frequently used files and all directories to faster disk areas.

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      This app doesn't have any features at the moment.
      Discontinued

      No support for Windows 10/11.

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    Showing 10 of 24 alternatives
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