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
UltraDefrag is a robust third-party defragmentation tool that offers advanced features like real-time defragmentation and boot-time optimization, making it suitable for power users. In contrast, Windows Disk Defragmenter is a straightforward built-in tool that is easy to use but lacks the advanced capabilities of UltraDefrag.