Inspect your disk and find the files that occupy the most space or that haven’t been modified in a long time.




Disk Inventory X is described as 'Disk usage utility for Mac OS X. It shows the sizes of files and folders in a special graphical way called "treemaps"' and is a popular disk usage analyzer in the system & hardware category. There are more than 50 alternatives to Disk Inventory X for a variety of platforms, including Windows, Mac, Linux, BSD and KDE Plasma apps. The best Disk Inventory X alternative is WinDirStat, which is both free and Open Source. Other great apps like Disk Inventory X are WizTree, Baobab Disk Usage Analyzer, TreeSize and Filelight.
Inspect your disk and find the files that occupy the most space or that haven’t been modified in a long time.




K4DirStat, fork of KDirStat , is a small utility program that sums up disk usage for directory trees, very much like the Unix 'du' command. It displays the disk space used up by a directory tree, both numerically and graphically.
This tool uses a sunburst chart to display the usage of your hard disk or other media. The chart shows all major files and folders from all directory levels at once.

Disk Space Analyzer allows you to easily find and remove the bulkiest content for your Mac or external storage. You can see your Mac disk usage, find folders that take up the most space, and manage hard drive space by moving or removing files.




SpaceObServer is a powerful and flexible hard disk space manager for Windows. It scans local and network drives using a background service and stores their structure, sizes and properties in an SQL database. Linux and Unix filesystems can be scanned via SSH (Secure Shell).



Folder Size analyzes your hard drives and displays file and folder sizes so that you can easily check the distribution of your disk space. The application will display the sizes of the folders and files and also the percentage of the total disk size that they occupy in a bar...




O&O DiskStat is a high-power tool for analyzing the used disk space on your storage volumes. With an easy-to-use interface based on the design of the Windows Explorer, you can take a closer look at the file and folder structure of your internal and external drives.

Xinorbis is a completely FREE, powerful Windows-based data storage analyser for single users or network administrators. Provides an instant visual display of the contents of a hard disk, single or multiple directories. Output reports to XML, CSV, HTML or plain ASCII.




OmniDiskSweeper is a Mac OS X utility for quickly finding and deleting big, useless files and making space on your hard disks. OmniDiskSweeper scans your disks and highlights the biggest files, so you can determine what's using up your disk space.



RidNacs is a very fast disk space usage analyzer for Microsoft Windows. It scans your local drives, network drives or single directories and produces a tree view with a percentage bar chart column. This gives the user a quick and easy way to identify the largest directories and...




WhatSize is a simple tool that allows the user to quickly measure the size in bytes of a given folder and all subfolders and files within it. You would be surprised at how many useless files might be laying around on your hard disks.



A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate cleanup, archiving, and moving.




Disk Inventory X had a visual "block view" of the filesystem - which is the whole point! The idea is a quick visual scan tells you where the big files are...