Best Free Disk Defragmenter with 30M Users
Secure Disk Defragmenter with Smart Defragment & Optimization
Maximum Hard Drive Performance for Higher Data Access Speed
Faster & Automatic Defragmentation for More Disk Space
Guaranteed Data Safety and Disk Stability
What does Smart Defrag 4 do?
Smart Defrag 4, a FREE, light, and stable disk defragment tool designed for maximum hard drive performance, introduces Boot Time Disk Defrag to get up to 100% faster PC startup by intelligently streamlining your files based on using frequency,