1. Glary Utilities offers numerous powerful and easy-to-use system tools and utilities to fix, speed up, maintain and protect your PC.

    Bundleware

    Be careful during the installation: Forum

  2. 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.

    Bundleware

    VirusTotal returns the following: Win32/Bundled.Toolbar.Google.D potentially unsafe

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  3. 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.

    Bundleware

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

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  4. Make your old PC live longer — and your new PC run faster — with AVG TuneUp. Our PC optimizer comes with revamped Sleep Mode technology to boost your PC speed and performance, and Disk and Browser Cleaners that free your storage space.
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  5. 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.
  6. Wise Disk Cleaner is a quick and safe junk file cleaner. The advanced scan engine will quickly locate junk files in your system and remove them safely. By deleting temporary and junk files, it increases available disk space and improves your system performance.
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  7. Smart Defrag is a Reliable and Intelligent Disk Defragmenter with Ultra-fast, Stable, Efficient Defrag Engine. Smart Defrag supports deep defragment, defragmentation of multi-volumes, it optimizes file placement and have the option to automate your defragmentation for you.

    Bundleware

    The installer may contain adwares. Be careful during the installation: Forum

  8. O&O Defrag 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.
  9. Award-winning optimizer that will clean, fix and speed up your PC in a few simple clicks. Experts recommend BoostSpeed as effective, fast and a program the entire family can use.
  10. 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.
  11. 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.
  12. System Mechanic is a suite of tools made to tune up your PC. It can solve several PC problems and optimize performance.
  13. 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.

    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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  14. HDCleaner is a complete system cleaner and optimizer for Windows PC.
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    • Free PersonalProprietary
    • Windows
    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.