IObit SmartDefrag – Best Free Disk Defragmenter with 30M Users. Accelerate the whole system with fast and efficient disk defragment. SmartDefrag helps defragment your hard drive more efficiently than any other product on the market – free or not. It is known that disk fragments has been a primary cause of slow and unstable PC performance.








Smart Defrag 2 is such a FREE tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance. With “install it and forget it” feature, Smart Defrag 2 works automatically and quietly in the background on your PC, keeping your hard disk running at its top speed. Designed with Smart Defrag™ technology, Smart Defrag Server 2010 is an advanced solution to maintain server disks reliability and optimize performance. The new Smart Defrag Server 2010 is ready for Windows Server 2008/2003/2000 to optimize hard disks and securely pack file fragments together with all levels of RAID volumes supported.