- 
Defraggler Disk defragmentation is a necessary procedure that, from my point of view, should be performed at least once a year if you want to keep your drive well-organized and increase the free space on your disk.
An application that can help you with this issue is Defraggler.
This useful program will analyze any of your drives and offer you a list with all found discontinuous fragments. I liked the fact that it gave me the option to select which fragments to defrag.
Furthermore, this application also gives you valuable information regarding the state of your drive, like health, temperature, power on hours and many other. Knowing these details might prove to be very useful as you can predict a possible failure and prevent using important data from your drives.
The most relevant advantage of using this defrag tool is that it allows folder and file defragmentation.
From my experience with these type of programs, completing defragmentation processes can take a while. Unfortunately, this program doesn't make an exception.
In my opinion, Defraggler is worth a try as it did a good job storing all the fragments from my drives in a contiguous order and helping me create more free space on my disks. And considering you don't have to pay a large sum to use it, I believe you should try this program.
Download Defraggler
Download Defraggler Portable
Auslogics Disk Defrag Disk Defrag, by the Auslogics Software, will return the lost vitality of your disk drives, and it will do it in a record time. Using this program you will be able to recover the initial speed of your disk units.
In fact, it is much faster than many of its competitors, even it allows you to keep using your PC during the defragmentation process.
Its best point is in its user interface, a polished environment that only shows the important stuff for you. The result is a clearer and simpler to use interface, which also means that it is more accessible to the user, whatever his/her level of knowledge is. Once the process is finished, your CPU and memory will go back to work a lot faster. You can also make it work in the background when you aren't using the PC, and it will keep your disk defragmented and ready to work.
The program is free, but you can support the developers by making a donation trough their web page. Disk Defrag works on Windows 2000, Windows XP, Windows 2003 and Windows Vista.
Download Auslogics Disk Defrag
Download Auslogics Disk Defrag Portable
Smart Defrag Though many misevaluate its importance, data fragmentation is a leading factor in the decrease of the system's performance level and operating speed. The defragmentation is the process of re-arranging the location of data (data clusters) on the disks in such a way that the disks work more effectively and enable faster data access times.
By default, Microsoft Windows provides a utility able to resolve the issue, but a more useful solution is the one represented by Smart Defrag.
At first, Smart Defrag will enable you to select specific drives and partitions, then quickly and accurately analyze them in order to determine their fragmentation levels. It will let you know, in a very precise manner, how badly defragmentation is needed for every analyzed drive.
After the defragmentation is performed, it will display the fragmentation rate changes in percents, as well as a comprehensive report that lists every defragmented file. Both the analysis and the actual defragmentation are performed in a short time, even for rather large partitions.
Furthermore, the results are truly accurate.
Anyway, these aren’t the only advantages of this powerful tool. It’s also very easy-to-use. Its straightforward interface makes it suitable even for complete beginners that have little or no experience to operate similar applications.
Smart Defrag also comes with many handy additional features and functions. For example, it provides the reliable Boot Time Disk Defrag technology to streamline access to the most frequently used files. Its Deep Analysis mode even includes useful tools that can find and remove junk files from your drives.
As you can see, Smart Defrag is truly comprehensive and powerful. Even though it offers undeniable benefits, it also comes with an unbeatable price: it’s completely free. In conclusion, there’s simply no reason to hesitate giving it a try.
Download Smart Defrag
Download Smart Defrag Portable
MyDefrag MyDefrag (formely called JKDefrag) is a free application that is designed to help us to defragment our hard disks and optimize the free space in Flash, SSD disks, USB devices, pen drives, etc.
While installing, we can choose to install any or all of the following components: script interpreter, standard scripts, example scripts, user's manual, and screensaver. We can also set this program to perform automatic optimizations every so often. It is possible to use this program to analyze only, defragment only, consolidate the free space in hard disks, SSD disks, Flash disks, and so on.
There are three defragmentation and optimization modes that can be set to run periodically: daily, weekly, and monthly. They correspond to a light defragmentation, a medium defragmentation, and a high defragmentation, respectively. This program is easy to operate by anyone.
There is a disadvantage, and that is, the program takes a huge amount of time to perform even the lightest defragmentation, and it freezes more times than desired. MyDefrag runs under the following operating systems: Windows 7, 2008, VIsta, XP, and 2003.
Download MyDefrag