Smart Disk Defrag Pro's interface is plain and intuitive, featuring the classic cluster map that displays fragmented, defragmented, and empty space. Smart Disk Defrag Pro took 14 seconds to run a scan of our hard drive and tell how much it is fragmented. We clicked the defrag button and waited 10 minutes for the program to do its thing. In the time it took us to go make a snack, Smart Disk Defrag Pro had tidied up our hard drive.

How to Defrag Your Hard Disk? You need Three Simple Steps!

We double-checked its work by running the built-in Windows Disk Defragmenter, and it confirmed that our disk was now 0 percent fragmented. Smart Disk Defrag Pro is easy enough for just about anyone to use, but it also has a few advanced features, such as options to schedule automatic defrags and defrag individual folders, that will be attractive to more advanced users.

There's a well-written word user manual available on Smart Disk Defrag Pro\'s Web site, but most people won't need it. Overall, we found Smart Disk Defrag Pro to be a simple, powerful tool, and we recommend it. Smart Disk Defrag Pro is a disk defrag tool designed for maximum hard drive performance. Smart Disk Defrag Pro works fast, automatically and quietly in the background and is suitable for large hard drives.

Smart Disk Defrag Pro provides a lot of functionality from a simple, elegant, easy-to-navigate, and clearly labeled interface. This free app lists six categories of items to clean: Windows Histories, Program Histories, Browser History, Cookies, Messengers, and Plugins. Windows Histories included Run Command, Find File, Start Menu, Recent File, Task Scheduler Log File, and other similar areas.

This software supports all Windows versions:  Windows 7, Windows 8, Windows Vista, Windows XP and other Windows versions.