O&O Defrag Professional Edition is a full-featured defragmentation solution that will help keep your PC in tip-top shape. O&O Defrag Free Edition is also available.
Fragmentation can drastically slow down your computer as it rearranges the individual data fragments and writes them contiguously on the hard disk. This is really the only way for your computer to regain its original power and performance. All your system's files will be sorted according to their level of use, and each one will be separated into its own section of the hard disk (drive zones). O&O Defrag 12 introduces 3 new defragmentation methods that can also perfectly apply a user-defined classification of files to complement all previous methods.