Disk Defragmenter is a utility in Microsoft Windows designed to increase access speed by rearranging files stored on a disk to occupy contiguous storage locations, a technique called defragmentation. Developed by Microsoft
License: Free
O&O Defrag offers advanced features like real-time defragmentation, SSD optimization, and comprehensive reporting, making it suitable for power users and those with specific needs. In contrast, Windows Disk Defragmenter provides basic functionality that is sufficient for most users but lacks advanced features and support for SSDs. Overall, O&O Defrag is more powerful and feature-rich, while Windows Disk Defragmenter is simpler and free.