Smart Defrag can defragment files, folders, and entire drives as needed or scheduled. It also features SSD trimming to prolong your SSD performance and life. Here is a direct link to download Smart Defrag for current IObit users. Portable version is also available.

Auslogics Disk Defrag is designed specifically for fast optimization of today's modern hard disks.

Use Defraggler to defrag your entire hard drive, or individual files - unique in the industry. This compact and Windows application will fully support NTFS and FAT32 file systems.
Portable version available.

A tool for disk defragmentation and Windows optimization.

IObit Smart Defrag 6 is a reliable and easy-to-use disk optimizer designed for peak hard drive performance. The latest stable version can be found here.

UltraDefrag is a free disk defragmenter that supports defragmentation of locked system files by running during the boot process. 64-Bit and Portable also available.

O&O Defrag activates the hidden performance of your computer and packs file fragments efficiently and securely together. Full feature O&O Defrag Professional is also available.

O&O Defrag Professional Edition is a full-featured defragmentation solution that will help keep your PC in tip-top shape. O&O Defrag Free Edition is also available.

Puran Defrag is a simple disk defragmenter that will defrag files and optimize your system.

Glarysoft Disk SpeedUp is a high-speed defragmentation tool designed to analyze, defrag, and optimize disks for peak computer performance.

Advanced GUI for Sysinternals defragmentation engine.

WinContig is an easy-to-use stand-alone defragmentation tool that doesn't create any installation directories or registry entries on your computer.

Auslogics Disk Defrag Pro is the professional edition of Auslogics Disk Defrag. It provides you with a speedy and efficient way to defragment your drives.

A short version introduction to full-featured Diskeeper.

PerfectDisk's fast and powerful defrag will help speed up everything you do, from web browsing to downloading music and editing pictures.

Vopt is a well-known, safe, and fast defragger for Windows. Previously shareware the author has provided a free serial number for everyone before he passed away.

Defrag your page files and registry hives.

Smart Defrag Portable defragments files, folders, and entire drives; it also features SSD trimming to prolong your SSD performance and life. Installer version is also available.

UltraDefrag is a free disk defragmenter that supports defragmentation of locked system files by running during the boot process. 32-Bit and Portable also available.

Toolwiz Smart Defrag is faster by ten times than native defrag of Windows.

A convenient GUI for JkDefrag. JkDefrag is a free disk defragment and optimize utility.

PerfectDisk is the world's leading disk defragmentation and optimization utility, used by large enterprises, small businesses, and home consumers.

Quicksys Disk Defrag is a free disk defragmenter and optimizer for Windows.

Defraggler Portable can be used to defrag your entire hard drive, or individual files - unique in the industry. This compact and Windows application will fully support NTFS and FAT32 file systems. Installer version available.

DiskTuna (formerly DiskTune) is an on-demand, free, hard drive disk defragmentation and optimization software.

With AML Free Disk Defrag you'll get the maximum out of your hard drive performance.

Diskeeper Professional edition performance software elevates system performance and debugs fragmentation related problems as they occur.

Contig is a single-file defragmenter that attempts to make files contiguous on a disk. It's perfect for quickly optimizing files that are continuously becoming fragmented, or that you want to ensure are in as few fragments as possible.

Defrag your hard drive in a matter of seconds with an easy to use 3 step process.

This FREE utility allows you to defragment files in just a couple of mouse clicks in Windows Explorer.

MyDefragPowerGUI is first release of the successor of JkDefragGUI. MyDefragPowerGUI has basically the same functions as JkDefragGUI..

Diskeeper with new IntelliWrite™ fragmentation prevention resolves fragmentation issues by preventing up to 85% of all fragmentation from happening in the first place.

Optimizes Windows defrag and restarts your computer, which refreshes the RAM and loads just the defrag.exe program.

A defrag-to-shutdown tool for 2000, XP or better operating systems.

ScanDefrag is a small utility program that configures and runs Microsoft's or Norton's disk utilities as part of the next Window's startup process.

This popular free application perfectly defragments computer disks. No longer available for download but we have many other listings in the Defragmentors and TRIM category.

Senses when your computer is at an idle state and defrags your hard drive.

The proactive technology of mst Defrag guarantees maximum system performance not just in the moments after the defragmentation has just finished, but also thereafter.

dfgPortable provides true portability for the hard drive defragmentation app Defraggler.

HDiskDefrag can defragment your hard drive(s) as well as remove temporary files, recreate hiberfile.sys and more.

Defragment your hard drives manually or in background mode.

With O&O SpeedCheck you can simulate your Windows system in a fragmented and defragmented state.

UltraDefrag Portable is a disk defragmenter that supports the defragmentation of locked system files by running during the boot process. Also available for 32-Bit and 64-Bit systems separately.

Perform disk defrags on a schedule that you determine.