Ainvo Disk Defrag - Version 18.104.22.1681 Thank you for using our product. This popular free application perfectly defragments computer disks. Thanks to it, thousands of people devote more time to what they really like. Disk fragmentation slows down the operation of software. Start disk defragmentation using the "Disk defragmentation" link. If necessary, click the "Cancel" button and stop defragmentation.