TreeSize is described as 'Professional 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' and is a well-known app in the OS & Utilities category. There are more than 50 alternatives to TreeSize for a variety of platforms, including Windows, Mac, Linux, BSD and Android. The best alternative is WinDirStat, which is both free and Open Source. Other great apps like TreeSize are WizTree (Free Personal), Baobab Disk Usage Analyzer (Free, Open Source), ncdu (Free, Open Source) and FreeCommander (Freemium).
PA Storage Monitor shows what you are storing and supports your storage manager tasks. Many rich file reports, including file owner information available. PA Storage Monitor: **Report on file ages, types, owners, duplicates...
Disk Usage Analyzer - a free program to analyze disk space of the computer. It helps you to quickly and easily determine the size of folders on your computer, as well as the number of files they contain.
Total Directory Report - is a professional application designed to allow you viewing your folders, disks or FTP servers as a set of analytical reports or detailed ordered lists in HTML, CSV or PDF formats.
fsv (pronounced eff-ess-vee) is a file system visualizer in cyberspace. It lays out files and directories in three dimensions, geometrically representing the file system hierarchy to allow visual overview and analysis.
This tool enables you to get a usage piechart from your FTP service, showing which directories are taking the most space, and to drill down into those directories to see which are the largest files. Simply double-click on a pie segment to drill down!