Defragmentation is a process that physically organizes the content of your hard disk and stores data into a small continuous region. It decreases the degree of fragmentation that helps you to increase the speed of your computer. Many such programs enable you to reduce software crashes and loads your files faster.

Following is a handpicked list of Top Defrag Software, with their popular features and website links. The list contains both open source (free) and commercial (paid) software.

1) Systweak Advanced Disk Speedup

Systweak Advanced System is powerful cleanup and defrag program. It cleans your hard drive and runs your PC faster. This tool helps you to reduce system crashes.


  • It helps you to improve drive performance.
  • You can easily switch between the game computer and home machine.
  • Update the necessary driver on your computer to faster your computer.
  • The tool protects your system from malware and keeps your sensitive data safe.

2) O&O Defrag Free Edition

O&O Defrag Free Edition is a tool that enables you to optimize your SSDs and hard disks. This application allows you to speed up your computer. It can find and remove unwanted files that occupy your memory.


  • It has a fragment filter that identifies the most fragmented files on your hard disk.
  • This program is easy to use.
  • It combines six hard disk blocks into one for the fragmentation of SSD.
  • O&O provides a time to view which defragmentation activity results in successful optimization.
  • The program enables your system and program to start faster.
  • The supported platform is Windows.

3) Defraggler

Defraggler is a tool that helps you to Speed up your computer with defragmentation. This application can defrag disk safely and securely. It helps you to organize empty disk space.


  • It can free up your junk files and drives.
  • The tool supports full customization.
  • You can schedule defragmentation daily, weekly, or monthly.
  • It is compact and portable.
  • The software offers a drive map to view blocks that are empty, needing defragmentation, or not fragmented.
  • It provides support for more than 43 languages.

4) Smart Defrag

Smart Defrag is a fast and deep defragment tool that enables you to improve PC performance and optimize hard disk. You can quickly access programs on your computer.


  • It performs boot time defrag to start your computer faster.
  • This application helps you to enhance the performance of the game.
  • It supports multithreading for fast, stable, and defrags.
  • You can download this software to monitor disk status in real time.
  • It enables you to defragment large files with ease.

5) Windows' Built-In Disk Defragmenter

Windows' Built-In Disk Defragmenter is a software that enables you to increase data access speed by rearranging files stored on PC. It helps you to reduce the time taken to read data from the disc.


  • It can decrease your PC startup time.
  • Windows' Built-In Disk Defragmenter offers easy to use interface.
  • You can perform defragment for USB drives, SD cards, or solid-state drives.

6) Wise Care 365

Wise Care 365 is a system optimization tool that can clean junk files and registry from your computer. This app enables you to easily backup and restore registry files.


  • It can prevent changes to the default browser.
  • This program can prevent a new application from adding into the windows startup.
  • You can perform a scan to clean the file with a specific extension.
  • The invalid registry can be removed easily.

7) UltraDefrag

UltraDefrag is software that optimizes your hard disk so your OS, games, and application can perform faster. It offers a graphical interface that helps you to optimize computer disk with a few mouse clicks.


  • You can perform defragmentation of files that are locked by the operating system.
  • It can be easily configurable.
  • This app can automatically defrag disk when your PC is idle.
  • It is portable.
  • You can easily install this software.
  • UltraDefrag offers 24/7 technical support.


8) WinContig

WinContig is easy to use the defragging application. It helps you to defrag any file. You can use this software without installation.


  • It is multilingual.
  • This tool is available for free.
  • It provides a command line tool for the betterment of operating computer programs.
  • The software is compatible with Windows.


9) Disk SpeedUp

Disk SpeedUp is easy to interface to defrag your hard disk.

It helps you to safely optimize your computer for un relevant files.


  • This program offers an interactive drive map.
  • It can defrag automatically.
  • Disk SpeedUp offers advanced settings to meet your requirement.
  • The supported platform is Windows.


10) PerfectDisk Pro

PerfectDisk Pro is a useful tool that optimizes your SSDs and HDDs. It offers flexible and customizes scheduling. This tool helps you to manage the disc space.


  • It can remove duplicate files.
  • This tool can perform boot-time defragmentation.
  • It helps you to increase the speed of your computer.
  • PerfectDisk Pro offers easy to use interface.
  • The supported platform is Windows.


11) Condusiv Diskeeper

Condusiv Diskeeper is a program that makes PCs and physical servers more fasters. It enables you to perform real-time defragmentation on SSDs or HDDs.


  • It can determine the frequency of used files.
  • The tool can extend the hardware lifecycle.
  • It offers faster data transfer.
  • This disk defragmentation tool can reduce software crashes and timeous.


12) Eusing Free Registry Cleaner

Eusing is a free registry cleaner application. It allows you to clean your PC from useless files with a few mouse clicks. This application can automatically create a backup of repaired entries of the registry.


  • This tool can safely scan your Windows for invalid information.
  • It offers a simple and user-friendly interface.
  • Software can make your computer faster.
  • It can improve the performance and stability of PC.
  • The software can search and remove unwanted Windows registry keys.
  • Ensuring tool does not contain adware, spyware, or viruses.
  • It is available for Windows operating system.


13) PassMark Fragger

PassMark Fragger is a tool that helps you to increase the performance of your computer by defragmenting files. It uses standard APIs for faster accessing your programs.


  • It allows you to fragment or defragment files individually.
  • You can control the size and number of fragments.
  • This app helps you to view the current fragmentation of a file graphically.
  • You can easily see the detailed information about fragmented files.
  • It helps you to fragment existing files without using free space available in the computer system.


14) MyDefrag

MyDefrag is a free defragmentation application. It offers a graphical user interface for ease of handling the program. This app allows you to scan flash memory disks for defragmentation.


  • You can optimize your computer daily, weekly, or monthly.
  • It supports more than 22 languages.
  • You can perform the scheduler at run time.
  • It comes with a help file for the new users.
  • This tool is available free for personal and business use.


15) Puran Defrag

Puran Defrag is a program that offers a wizard to optimize the performance of your computer. It performs the batch fix to keep your computer system clean.


  • It can move frequently used folders and files to faster disk areas.
  • This program performs optimization by freeing computer space.
  • Puran Defrag supports the command line defrag.
  • The software offers an unwanted folder or file exclusion.
  • Perform automatic defragmentation.
  • It is available for Windows.


16) Ultimate Defrag

Ultimate Defrag is software that enables you to optimize your file system. It can help you to defragment a full drive. This application enables you to restore your computer drive performance.


  • It can perform consolidation of both files and disk space and files within folders.
  • This tool enables you to boot your computer faster.
  • Supports wild card characters for selecting files.
  • It offers an intuitive user interface.



⚡ What is disc defragmentation?

Defragmentation is a process that physically organizes the content of your hard disk and stores data into a small continuous region. It decreases the degree of fragmentation that helps you to increase the speed of your computer.

❓ Can defragment cause problems?

Normally, defragment does not cause problems. It can lead to data loss only if there is a pre-existing problem.

✔️ Why should disk defragmentation be done?

Disk defragmentation is done because it helps you to assemble free disk space into a single block. It also enables you to prevent future fragmentation.

❓ Does defragging speed up computer?

Yes, defragging tools can speed up your computer.