Duc is a collection of tools for inspecting and visualizing disk usage.
Duc scales quite well, it has been tested on systems with more than 500 million files and several petabytes of storage.



Precious Disk is described as 'Recover disk space by removing gigabytes of unwanted and forgotten files!' and is a disk usage analyzer in the os & utilities category. There are more than 25 alternatives to Precious Disk for a variety of platforms, including Windows, Mac, Linux, BSD and KDE Plasma apps. The best Precious Disk alternative is Baobab Disk Usage Analyzer, which is both free and Open Source. Other great apps like Precious Disk are Filelight, TreeSize, SquirrelDisk and DiskUsage.
Duc is a collection of tools for inspecting and visualizing disk usage.
Duc scales quite well, it has been tested on systems with more than 500 million files and several petabytes of storage.



A fast, native disk space analyzer for macOS, Windows and Linux that maps your storage as an interactive sunburst and helps reclaim wasted space.




A fast, native macOS disk space analyzer that helps you find where your storage is going. Scan any folder or volume, explore results with an interactive sunburst chart and file browser, and clean up — all without leaving the app.



DiskSavvy is a free, fast and easy-to-use disk space analyzer utility allowing one to analyze disk usage in one or more disks, directories, network shares and/or NAS storage devices.




Disk Space Fan is a powerful disk space analysis tool for Windows and it is a freeware. It helps you to free up disk space by quickly finding and deleting big, useless files. It displays disk space usage with a nice chart. You can navigate the folders easily with the chart.




HDGraph helps you to free disk space : it finds for you the largest folders on your drive.



Visual disk usage analyzer for Mac featuring byte-level duplicate file detection, detailed storage statistics, customizable folder scans, temporary file removal, undo safeguards, selective cleanup, support for large files, and dedicated modules for managing storage.




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.



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).


