mst Defrag is a proactive defragmentation software, that runs in the background and does not interrupt or disturb your work. It continues to monitor your disk(s) and automatically defragments them when the computer is idle, allowing you to avoid bottlenecks by maintaining maximum performance. mst Defrag is also available in network and server editions.

Please Note: this download is for Windows 64-bit (x64) OS, it can't work on Windows 32-bit (x86) OS.

The license of this software is Free Trial Software, the price is $15.90, you can free download and get a free trial.