The 5 Definitive Best Defragmenter Applications for 2008
Here is the list of the 5 Best Defragmenter applications for windows out there.
1- Diskeeper:

Diskeeper is a top notch defragmenter application. It puts your PC in the driver’s seat, allowing you to enjoy unprecedented performance and reliability while you work, browse and play. Fragmented hard drives drain critical system resources and compromise almost every aspect of daily computer use, leading to longer load times, persistent lags and costly crashes. Diskeeper shifts your system into high gear, ensuring that all your programs are run.
Download Diskeeper | Official Website
2- PerfectDisk:

PerfectDisk is the defragmenter of choice for millions of users around the world. And with PerfectDisk, you now have more flexibility and automation than any other solution available to defrag your drives and make your computer run faster than ever. Whatever your environment includes, even servers or Microsoft’s new Windows Home Server, you’ll find the right solution to defragment and tune your system.
Download Perfect Disk | Official Website
3- JKDefrag

JkDefrag is a disk defragmenting utility for Windows, and is the first free software defragmenting project of its kind. It is a disk defragmenter and optimizer for Windows 2000/2003/XP/Vista/2008/X64. Completely automatic and very easy to use, fast, low overhead, with several optimization strategies, and can handle floppies, USB disks, memory sticks, and anything else that looks like a disk to Windows. Included are a Windows version, a commandline version (for scheduling by the task scheduler or for use from administrator scripts), a screensaver version, a DLL library (for use from programming languages), versions for Windows X64, and the complete sources.
4- O&O Defrag Software:

O&O Defrag is simple, quick and sequire. You can get the maximum performance out of your expensive hardware investments - and all this with only a tiny investment of time and energy! The new O&O Defrag 10 Professional Edition for Windows-based workstations unlocks the hidden Performance of your computer. This software will optimize your hard disk in Windows Vista, XP Home, Windows XP Professional and Windows 2000 Professional, securely repacking fragmented files together for more efficiency.
Download O&O Defrag | Official Website
5- Auslogics BoostSpeed

Auslogics is another great defragmenter application! It Start programs faster, Speed up computer start time. Increase Internet speed, optimize your Internet Explorer, Firefox and E-mail programs. It will clean up disks and the Registry to speed up your computer and tweak Windows to its peak performance.
Download Auslogics BoostSpeed | Official Website
I hope you enjoyed this post, feel free to put your comments and let us know what you think.
Comments
@MRQ: Defraggler, no doubt is a good software but since I was checking out the best 5 defrag softwares, It couldn’t fit in
- Though, your suggestions are always welcomed.
Before using any defragmenter ,i want to make sure for few things.
when we are doing defragmentation automatic or more
1)it’s not reducing magnetic flux around your disk??
2) in defragmentation files physically get reorganized , that doesn’t cause any bad sector ?
Please give me your suggestion
I would suggest UltimateDefrag by DiskTrix.
http://www.disktrix.com/
read their info, and you’ll see why
[...] I’ve covered best Defragmenters and today I Confronted a very efficient disk defragmenter software “Puran Defrag”. [...]
could you please give a brief description of the tests done with the statistics for each of these. What exactly are the speed improvements for each of these defragmenters ?
I use Diskeeper and agree that its the best in the market. Whether its for a boot defrag or the hassle free automatic option. Diskeeper also defrags with as less as 5% free space.
Disktrix Ultimate Defrag works good on both our xp desktops, but not on the one that runs on win2000pro. Which is the best for Win2KPro?
I saw reference to JK & O&O, do the others all have a version to look for?






No mention of defraggler by Piriform?