Auslogics Disk Defrag is a shareware software application intended to defragment files and folders on a hard drive, consolidate free space and optimize file placement using different criteria. Depending on the program version, it may also have certain additional functions described below. It runs under the Microsoft Windows operating system. According to the download counter on one of the main software distributing websites, CNet's download.com, the application has been downloaded 10,545,237 times as of February 8, 2012, with thousands more downloads from other software distributing websites and from the publisher's official site. Auslogics Disk Defrag comes recommended by the Official Windows Magazine as a tool for optimizing the latest hard drives.