If you have got a lot of data on your Hard Disk then it is very much useful to defrag it. Though disk defragmention takes a lot of time, it is a one time job. I usually defrag my disk once in a month and that does help me to run applications faster. So if you are looking for a freeware disk defragmenter, then give a try for Smart Defrag from IObit. Smart Defrag has got many features that you normally see in commercial products.
Smart Defrag is a simple freeware utility to defragment your hard drive in the background during the system idle time. The defragmenter works continuously, automatically and quietly in the background without causing you much trouble. The simple interface will help the newbies also to use it without much confusion. Smart Defrag also allows you to choose to optimize the placement of files on your hard drive during the operation. Smart Defrag places frequently used files and directories into the fastest area of the disk thus enabling your computer to run faster. It has got many options which include a simple scheduling tool, a battery power setting for laptop users, the ability to skip files based on the size etc. Smart Defrag works with Windows Vista, XP, 2000 and Windows 7.