Disk Defrag (formerly Glarysoft Disk SpeedUp)
Disk Defrag (formerly Glarysoft Disk SpeedUp) 5.0.1.57 for Windows
GlarySoft Inc System Utilities / Registry Tools
A software utility that speeds up your system by performing regular defragmentation operations on your hard disk, using the built-in scheduler

Software Summary:

You can run Disk Defrag (formerly Glarysoft Disk SpeedUp) on Windows operating systems. Disk Defrag (formerly Glarysoft Disk SpeedUp) is a software product developed by GlarySoft Inc and it is listed in the System Utilities category under Registry Tools. Disk Defrag (formerly Glarysoft Disk SpeedUp) is a free software product and it is fully functional for an unlimited time although there may be other versions of this software product.

Alternatives in System Utilities on Windows