Unleash the hidden performance of your computer with the minimum effort. O&O Defrag 11 Professional Edition packs file fragments quickly and securely back together to optimize your hard disk under Windows. Its functionality ranges from a fully automated defragmentation to an individual professional set up. It can do everything a truly good defragmentation software should be able to do.

The new background monitoring function helps to prevent fragmentation at source. Newly added and modified files are analyzed and defragmented whenever they are not being accessed. O&O Defrag makes sure that your hard disk is constantly performing at its peak.

Protection from strong fragmentation through background monitoring and defragmentationNew
Defragmentation of individual directories and files through the context menuNew
Optimized File Status View and enhanced Block ViewNew
Wizard for regular and automated defragmentation
Five different defragmentation methods
O&O OneButtonDefrag for simple setting up of automatic defragmentation
O&O ActivityGuardPro for the least system load
Support of all Windows drives