Defraggler v2.21 发布了。Defraggler的最大特色是支持对一个文件夹或文件进行磁盘整理，而不是只有整个硬盘整理。这当然比整理整个硬盘要快得多而且实用。
改进日志：
Improved Analysis and Defrag performance
Improved memory usage and management architecture
Optimized 64-bit builds on Windows 8 and 10
Improved update checking process
Updated exception handling and reporting
Improved localization and language support
Minor GUI improvements
Minor bug fixes