Ascendis DiskVision
Displays disk space utilization with detailed information. Supports easy management on individual files and folders. [Windows 95/98/NT4/2000]
BAC WhatsGone
Does a scan of the selected disc or folder and then gives a color coded view of the disc space used by each folder. Includes CSV export option. [Windows 9x/2000/ME/XP]
BytesBak
Maintains a history of disk space usage, allowing easier identification of disk contents that have been updated, grown or shrunk in size.
3D FileSystem Profiler
Provides 3D visual representation of file system statistics. Aids in visual analysis of the disk space usage. [Java based]
Directory Sizer - FranzO Software
Historical analysis of disk usage by directory. Charting and drill down with web UI. Designed for the enterprise with NT Services and remote install.
Diruse
Command-line tool that displays directory size information, including compression information for NTFS volumes. [Windows 2000 with NTFS volumes]
Disk Recon
File management tool that includes folder sizes, file search, duplicate file finder and file monitor. [Windows 98/ME/2000/XP]
Disk Size Manager
Provides pie and bar charts of disk usage in a file manager interface. Includes a tool to conditionally search files and folders. [Windows 9x/2000/NT/ME/XP]
Disk Triage
Disk space sizing and analysis utility. Features visual graphs of the sizing data, with the ability to run in batch mode.
Disk Usage 99
Displays pie charts showing used and free space for up to 5 drives. Freeware [Windows 9x/NT]
Diskdata
Explorer-like application that displays disk space utilization in report or chart format. [Windows 9x/NT/2000/ME/XP]
DiskSpaceChart
A small shareware utility that shows a 3D pie chart indicating disk space usage. [Windows 9x/ME/NT/2000]
DiskSurveyor
Graphically maps hard drive space, catalogs files on CDs. [Mac OS 7 and higher]
DiskView
Integrates with Windows Explorer to present visual indication of disk usage. Provides a visualizer pane for pie/bar charts, adds folder size columns in the details view, and size indicator bars in Explorer's tree view. [Windows 2000/XP/2003]
FolderSizes
Shareware that creates visual representations of hard drive space utilization and folder sizes through multi-threaded analysis engine. [Windows 95/98/ME/NT 4.0/2000/XP and Internet Explorer]
FreeSpace
Monitors hard disk free space in real time. [Windows 9x/NT4/2000]
Haywire Software Zdu
Zdu is a diagnostic command-line utility for disks and directories. Supports FAT, FAT32 and NTFS filesystems, UNC paths and non-standard file streams. [Windows 9x/NT/2000/XP]
jDiskReport
Cross platform graphical disk report utility to analyze hard disks and collect statistics that can be viewed using charts and tables. [Free: Windows/Solaris/Linux]
Junkfind
Cross platform tool that helps graphically find and remove folders that take up excessive space. Uses rectangular boxes to represent folders based on their relative size.
MBS Disk Space Analyzer
Disk space analyzer application for Windows 98/ME/XP.
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