Diskeeper

Diskeeper is a quality and efficient disk defragmentation program. It allows you to schedule up to two automatic system defragmentation modes for each disk separately, depending on the current usage and load on your computer.

For fragmented files that cause the most system slowdown, it will provide instant defragmentation and speed up your computer effectively. Maximum system stability and reliability is guaranteed with this program.

Since version 10, it includes new groundbreaking technologies, such as Intelligent File Access Acceleration Sequencing Technology (I-FAAST), used to check disk performance (included only in selected editions*).