Wise Disk Cleaner is a free Disk Cleaner and Defragmenter that cleans junks of browsers, remove junk and useless file of Windows and defragments your disk. Also it cleans temporary files, history, cookies and autocomplete form history of Internet Explorer, Chrome, Firefox and Safari browsers. And it removes of Windows junk files, such as Recycle Bin, Recent Documents, Temporary files and Log files. This freeware tool cleans a lot more files than most similar products and includes a “slim down” mode that gets rid of a lot of extraneous objects including wallpapers and other Windows files you may never use. A disk defrag feature is also included for free. Clean your disk with Wise Disk Cleaner and your computer will run faster.

UltraDefrag is a powerful disk defragmenter for Windows. It can quickly boost performance of your computer and is easy to use. Also it can defragment your disks automatically so you won't need to take care about that yourself.

IObit Smart Defrag is a Disk Defragmenter, that accelerates the whole system with fast and efficient disk defragment. Based on IObit latest disk defrag engine and “Boot Time Disk Defrag” technology, Smart Defrag is created with the world’s leading defragmentation ability.