No specific info about version 21.0. Please visit the main page of Diskeeper 18 on Software Informer.
It is designed to optimize file reading and writing at the Windows level.
Diskeeper frequently defragments your disks and will PC improve performance.
This dependable application will help you defragment your hard-disk.
Diskeeper® 12 keeps your PCs and Servers running like new.
Professional, full featured tool for disk analysis and defragmentation.
Diskeeper 2008 12.0.781 it´s an utility to defrag your hard disk.