The main window is split into the file system tree on the left and the details view on the right.

Details view offers valuable information about the disk usage like the folder size, the disk space wasted due to the file system structure, the last access date, the NTFS compression rate and the owner.

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Windows

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The powerful disk space management software
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Disk Analyzer Pro - Disk space management software

Disk analyzer pro is the best disk space management software and storage analyzer which helps in managing and handling hard disk space and running your PC with the highest speed.

DiskReport is an online disk space usage tool.
You can quickly generate an online disk report for all your disks. The report contains pie charts of total size and total file counts for each folder.
With periodic scheduling, differential graphs are available, to help you find what has grown since previous report.
Cleaning advice is also available on some big folders (logfiles, updates, MySQL binlogs ...)

DiskReport

Linux

diskreport.net allow to generate an online report of disk space usage. Periodic run allow reports of size and file count variation, usefull to find growing files or directory.

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Disk Analyzer Pro - Disk space management software