Alternatives to O&O Defrag

Defraggler

Defraggler is a disk defragmentation tool developed by Piriform Ltd. It is used to increase computer performance and speed up the hard drive by rearranging fragmented data on the disk and consolidating free space. Defraggler can be used to defragment individual files, folders, or...

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

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UltraDefrag

UltraDefrag is a powerful open source disk defragmentation tool for Windows that helps optimize your hard drives for better performance. It can be run from the command line or as a GUI application. It works with any kind of hard drive, including SSDs, and performs both quick and ...

Auslogics Disk Defrag

Auslogics Disk Defrag is a free disk defragmentation and optimization utility designed to improve the speed and performance of your Windows PC. The app provides comprehensive defragmentation of your hard drive, allowing you to quickly and easily defragment your files and folders....

Bundleware Suggested to change default search engines and homepage to Yahoo in web browsers

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IObit Smart Defrag

IObit Smart Defrag is a free disk defragmenter software that helps optimize your hard drive performance by defragmenting and consolidating fragmented files. It works automatically and quietly in the background, so that you can set it and forget it. Smart Defrag also provides a co...

Bundleware The installer may contain adware. Be careful during installation: https://alternativeapp.info/discussions/applications/11718/be-careful-in-the-installation/

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MyDefrag

MyDefrag is a disk defragmentation and optimization utility for Microsoft Windows. It is designed to increase file access speed, improve system performance, and reclaim disk space. MyDefrag is designed to defragment NTFS and FAT file systems and to optimize them for a variety of ...

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

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System Mechanic

System Mechanic is a comprehensive PC optimization software tool that helps users speed up their computers, fix common PC problems, and boost system performance. It helps users to clean, optimize, and repair their computer system. It can help users to repair registry errors, defr...

PerfectDisk

PerfectDisk is a powerful disk defragmentation and optimization tool designed to improve the performance of Windows PCs and servers. It is the only defragmentation software that provides an automatic background defragmentation mode which can be scheduled or used on demand. It als...

WinContig

WinContig is a portable defragmentation and disk optimization utility for Windows. It is designed to defragment and optimize fragmented files on your computer for faster access and improved performance. It is easy to use and requires no installation. It uses a simple, intuitive i...

Condusiv Diskeeper

Condusiv Diskeeper is an automated disk defragmentation and optimization software application developed and distributed by Condusiv Technologies. It is designed to improve the performance of PCs, laptops and servers by optimizing the data layout on the hard drive, keeping the dri...

Diskeeper integrates write caching and delayed writes, so small changes are stored in system RAM and then written to their proper place on disk when idle or not busy rather than on demand. o & o has better scheduling and location/zone planning for massive files or archive files, but both features are handy to have. PrimoCache or SuperCache can replace Diskeeper caching for hybrid disk "read/write" caching.

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Puran Defrag

Puran Defrag is a free disk defragmentation and optimization utility designed to improve your computer's performance by defragmenting and optimizing the hard drive. It will defragment files, rearrange them on the disk, and optimize the file system for faster access and improved p...

Windows Disk Defragmenter

Windows Disk Defragmenter is a utility tool that reorganizes fragmented files on a computer's hard drive. It helps to improve system performance and reclaim lost disk space. The tool defragments file allocations on the hard drive, joining fragmented files and consolidating free s...

Power Defragmenter

Power Defragmenter is a utility program designed to increase the speed and performance of your computer by defragmenting, or reorganizing, the data stored on your hard disk. Defragmenting is an important process for maintaining your computer's performance and should be done regul...

Contig

Contig is an open-source Windows-based utility designed to analyze, defragment, and optimize files and folders on a hard disk drive. It uses a sophisticated algorithm to analyze disk usage and then reorganizes files and clusters to maximize disk performance. The app can also iden...

Vopt

Vopt is an application (or website) that provides PC users with a comprehensive set of tools and utilities to optimize their systems. It provides a wide range of features, including disk defragmentation, disk cleaning, and registry cleanup. Vopt also offers advanced options such ...

Discontinued The website no longer exists.

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UltimateDefrag

UltimateDefrag is a powerful defragmentation tool that enables users to quickly and easily defragment their Windows hard drives. It not only defragments and optimizes the entire hard drive, but also allows users to customize how their files and folders are organized. UltimateDefr...

Auslogics Disk Defrag Touch

Auslogics Disk Defrag Touch is an app that helps optimize your computer's hard drive performance by defragmenting file fragmentation. It is a Windows-based app that can be installed on both desktop and laptop computers. The app is designed to help improve system performance and r...

Ashampoo HDD Control

Ashampoo HDD Control is an easy-to-use system utility that helps users monitor and optimize their hard drive performance. This app offers a comprehensive suite of tools that allow users to check their hard drive’s health, defragment their disks, and manage their storage space. It...

WinTools.net

WinTools.net is an easy-to-use suite of Windows tools designed to help users optimize, clean, and maintain their PCs. The main application is a system-wide manager that provides users with quick access to a variety of different tools and utilities. The suite includes a powerful f...

Warning Overal's functionality is questionable, as it looks like a bunch of shortcuts for built-in Windows tools.

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DiskTuna

DiskTuna is an application (or website) that helps users optimize their computer's performance. It enables users to analyze and clean their hard drive, defragment their disk, and adjust their system settings to improve their computer's overall performance. The app also monitors t...

MyDefragGUI

MyDefragGUI is a user-friendly disk defragmentation and optimization utility for Windows. It uses a powerful and fast defragmentation engine to reorganize data on your hard drive, improving file access speed and overall system performance. It offers a graphical user interface (GU...

O&O Defrag

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