Defraggler allow you to perform defragmentation of files on your hard
disk. Defragmentation of your hard drive can significantly improve the
performance of your computer. With this tool you can defrag exactly what
you want, and drive map shows you blocks that are empty, not
fragmented, or needing defragmentation, organizes empty disk space to
further prevent fragmentation, and allow you to schedule defragmentation
daily, weekly, or monthly.