xdu!

WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat .

TreeSize tells you where precious disk space has gone to. It can be started from the context menu of a local folder or a local drive and displays the size of each folder, including its subfolders.

Baobab Disk Usage Analyzer is a graphical, menu-driven application to analyse disk usage on Linux. Disk Usage Analyzer can easily scan either the whole filesystem tree, or a specific user-requested directory branch (local or remote).

JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders.The tool analyses your disk drives and collects several statistics which you can view as overview charts and details tables.

A disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you don't have an entire gaphical setup, but have to do with a simple SSH connection. ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed.

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.

Disk Xray is a disk usage statistics viewer, duplicate files/folders finder and cleanup tool for Mac OS X.

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.

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. The files and folders are automatically sorted by size, with the biggest sizes first. While the app is measuring a folder the user can browse the files within that folder and immediately see the size in bytes. Hidden files, cache files, directories will all show up with their corresponding size. This application is similar to the ancient NeXTSTEP, DarkForest. Once the measuring of a folder has ended the user can also view the information by filtering for particular file sizes or types. The user can also move unwanted files and folder in the corresponding Trash bin similar to the Finders Delete button. »

Disk Analyzer Pro is a useful tool that swiftly analyzes your disk space and demonstrates the usage of the disk in terms of file count, file size, created date, etc. It gives you an overview of each and every existing file on the disk in a categorized manner. With the help of a file viewer window in Disk Analyzer Pro, you can delete, copy, move files from one place to another and can also create zip files, if required. The space occupied by the applications installed on your Mac machine can also be optimized by this advanced tool. »

xdiskusage is a user-friendly program to show you what is using up all your disk space. It is based on the design of xxdu written by Phillip C. Dykstra <dykstra at ieee dot org & gt. Changes have been made so it runs "du" for you, and can display the free space left on the disk, and produce a PostScript version of the display.